(C) The forces between the molecules are attractive.
The simplest form of matter, molecules are made up of two or more atoms that are chemically bound. They are a chemical substance's tiniest particle that nonetheless has its chemical properties. They can be straightforward or intricate, and they come in a range of sizes and shapes. Two or three atoms make up simple molecules like oxygen or water, but thousands of atoms make up complex compounds like proteins or DNA. The boiling point, melting point, and reactivity of an object are all determined by the interactions between its molecules. The type of bonding between the atoms and the overall electric charges of the molecule determine the attractiveness or repulsion of these interactions.
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the lowest note on a grand piano has a frequency of 27.5 hz . the entire string is 2.00 m long and has a mass of 400 g . the vibrating section of the string is 1.90 m long. part a what tension is needed to tune this string properly? express your answer in newtons.
The tension needed to properly tune a grand piano string can be calculated using the equation T = (μL2f2)/(4L2), which is 130.31N.
μ is the mass per unit length of the string, L is the length of the string's vibrating section, and f is the string's frequency. Therefore, to calculate the tension, we need to first calculate the mass per unit length, which is equal to the mass of the string divided by the length of the vibrating section.
In this case, the mass per unit length is 400g divided by 1.90m, which equals 210.53 g/m.
Now we can calculate the tension.
Plugging in the values to the equation, the tension is (210.53g/m×1.90m2×275Hz2)/(4×1.90m2)
=130.31N.
Therefore, the tension needed to tune this string properly is 130.31 N.
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Please help meeee i’m very confused
The amount of force is referred to as the magnitude of a force. Hence, option B is correct.
What is Force?A force is an action that has the ability to alter an object's motion. An object can be caused by a force, which can also accelerate an item. To describe force, a push or a pull, makes intuitive sense. Forces have had both direction and magnitude, since they are vector quantities. It is measured in newtons that use the SI system (N). The symbol for force is the letter F.An entity's net force equals the rate at which its momentum is changing over time, according to the original formulation of Newton's second law.Objects' velocities can be changed by the concepts of push, drag, and torque. Thrust causes an item to move faster, whereas torque allows an object to move slower. Each part of an extended body typically exerts forces on its adjacent sections; the internal mechanical stress in the body is the result of the distribution of these forces.To learn more about force refer
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A man of mass 60 kg runs up a flight of 30 steps in 40 seconds. If each step is 20 cm high, calculate the power of the man
Answer:
the answer is and would be 90w or 24w
A uniform resistance wire leng th till is stretched its becomes four times. Does its resistance in crease or decrease?
john has 200 joules of gravitational potential energy when he is standing still on a diving board. john jumps off the diving board. what is his gravitational potential energy when he is halfway to the water? (answer 100j)
His gravitational potential energy when he is halfway to the water is 100 joules.
What is potential energy?Potential energy in physics is the energy that an item retains as a result of its position in relation to other objects, internal tensions, electric charge, or other elements.
The gravitational potential energy of an item, the elastic potential energy of a stretched spring, and the electric potential energy of an electric charge in an electric field are examples of potential energy.
Initial potential energy of John is 200 joules.
Hence, his gravitational potential energy when he is halfway to the water is = (200/2) joules = 100 joules.
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3. Two identical balls of mass 1.8 kg hit head on and rebounded from each other. One ball was traveling at 9.2 m/s and the other ball at 8.7 m/s in the opposite direction. After collision, the second ball rebounded at a speed of 9.1 m/s. What is the speed of the first ball?
Answer:
8.7 m/s.
Explanation:
The speed of the first ball after the collision can be found using the conservation of momentum. The principle of conservation of momentum states that the total momentum of a closed system remains constant if no external forces act upon it.
Initially, the momentum of the first ball is 1.8 kg * 9.2 m/s = 16.56 kgm/s, and the momentum of the second ball is 1.8 kg * -8.7 m/s = -15.66 kgm/s. The total initial momentum is 0.9 kg*m/s
After the collision, the momentum of the second ball is 1.8 kg * 9.1 m/s = 16.38 kg*m/s.
Since the total momentum must remain constant, the momentum of the first ball after the collision is equal to the total initial momentum minus the final momentum of the second ball.
0.9 kgm/s = 16.56 kgm/s + final momentum of the first ball
final momentum of the first ball = 16.56 kgm/s - 0.9 kgm/s = 15.66 kg*m/s
To find the speed of the first ball after the collision, we can divide its final momentum by its mass:
15.66 kg*m/s / 1.8 kg = 8.7 m/s
So the speed of the first ball after the collision is 8.7 m/s.
a multiple-piston hydraulic jack has two output pistons, each with an area of 250 cm2. the input piston, whose area is 25 cm2, is connected to a lever that has a mechanical advantage of 9:1. if a 50 n force is exerted on the lever, how much pressure (kn/m2 or kpa) is developed in the system? how much force (kn) will be exerted by each output piston?
The pressure developed in the system is 180 Kn/m² and force that will be exerted by each output piston is 2.25 KN.
What is pressure?A physical force applied to an object is referred to as pressure. The force applied is perpendicular to the surface of the objects per unit area. F/A is the fundamental formula for pressure (Force per unit area). Pascals are a unit of pressure (Pa). Absolute, atmospheric, differential, and gauge pressures are different types of pressure. Have you ever noticed that when using a straw to drink something, you actually suck the air out of the straw? While taking a drink, you are actually exerting "Pressure."
a) Actual force applied F' = 50 x 9 = 450 N
so,
Pressure
= 450 / (25 x 10⁻⁴)
= 180000 N/m²
= 180 Kn/m²
b) force at each output = 180 x 250 x 10⁻⁴/2 =2.25 KN
Thus, The pressure developed in the system is 180 Kn/m² and force that will be exerted by each output piston is 2.25 KN.
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3. a 60 kg woman is in an elevator cab whose upward acceleration is 2 m/s2. what force does she exert on the floor of the cab? (a) 588 n (b) 708 n (c) 0 n (d) 294 n
Answer:
B
Explanation:
F = ma 'a' in this case is the acceleration of gravity (9.81 m/s^2) PLUS the acceleration of the elevator (2 m/s^2 )
F = 60 kg ( 9.81 + 2 ) m/s^2 = 708.6 N
The women exerts a force of 294N on the floor of cab which is moving upwards with an acceleration of 2 m/s2.
"the question is asking force exerted by woman on the floor of cab and not the net force"
The force exerted by a woman on the floor of the cab is equal to her weight, which is the force of gravity acting on her mass. According to Newton's second law of motion, this force is equal to the product of her mass and acceleration.
So, the force exerted by the woman is given by:
F = m * a = 60 kg * 2 m/s^2 = 120 N
Therefore, the answer is (d) 294 N.
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calculate the ratio of the mass of an electron to its rest mass coi 2a when it is moving with a kinetic energy of20 mev. (rest mass i / of electron= 0.51mev)
The ratio of the mass of an electron to its rest mass when it is moving with a kinetic energy of 20 MeV can be calculated using the equation of special relativity and assuming that the speed of the electron is much less than the speed of light. The result is that the mass of the electron is 39.22 times its rest mass.
The ratio of the mass of an electron to its rest mass can be calculated from its kinetic energy using the equation of special relativity, which states that the total energy of an object is equal to its rest mass multiplied by the square of the speed of light, plus its kinetic energy.
The rest mass of an electron is 0.51 MeV, so its total energy is given by:
[tex]E[/tex] = [tex]0.51 MeV*c^{2} + KE[/tex]
Where c is the speed of light, and KE is its kinetic energy.
Since the kinetic energy of the electron is 20 MeV, we have:
[tex]E = (0.51 MeV) * (c²) + 20 MeV[/tex]
And the total energy can be divided by the rest mass of the electron and the square of the speed of light to obtain the ratio of its mass to its rest mass:
[tex]m/m0[/tex] = [tex]\frac{E}{0.51 MeV * c^{2} }[/tex]
[tex]m/m0[/tex] = [tex]\frac{0.51 MeV*c^{2} + 20 MeV}{0.51 MeV }[/tex]
We can simplify the calculation by assuming that the speed of the electron is much less than the speed of light, so that we can ignore the term (0.51 MeV * c^2).
In that case, we have:
[tex]m/m0[/tex] = [tex]\frac{20MeV}{0.51MeV}[/tex]
[tex]m/m0 = 39.22[/tex]
So the ratio of the mass of an electron to its rest mass when it is moving with a kinetic energy of 20 MeV is 39.22.
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lada 10 how does the planet's distance from its star compare to the distance the 51 pegasi planet is from its star?
The first extrasolar planet to orbit a sun-like star has been identified as 51 distance Pegasi b. 48 light-years from Earth, in the constellation Pegasus, the planet revolves around the fifth-magnitude star 51 Pegasi.
In 1995, Swiss astronomers Michel Mayor and Didier Queloz announced the discovery of a planet circling 51 Pegasi, a star with physical characteristics (such as luminosity and temperature) strikingly comparable to those of the Sun. (For their finding, Mayor and Queloz received the 2019 Nobel Prize in Physics.) Although 51 Pegasi b, an extrasolar planet, cannot be seen from Earth, its existence has been inferred from the wobble that its gravity causes in the parent star's motion over a 4.23-day period. Its mass is 46%
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a car travels 95 km to the north at 70.0 km/h, then turns around and travels 21.9 km at 80.0 km/h. what is the difference between the average speed and the average velocity on this trip?
The average speed of the car on this trip is 76.4 km/h, which is the total distance travelled divided by the total time taken.
The average velocity, on the other hand, is 0 km/h, as the car has travelled in a straight line and has not changed direction. Therefore, the difference between the average speed and the average velocity is 76.4 km/h.
It is important to note that the average speed and velocity are two different measures of the same quantity. The difference between them can be seen in terms of the direction of the car's displacement. While the average speed gives the total distance travelled, the average velocity gives the direction in which the car has been travelling, and its magnitude.
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suppose you are on a strange planet and observe, at night, that the stars do not rise and set, but circle parallel to the horizon. next, you walk in a constant direction for 8000 km, and at your new location on the planet, you find that all stars rise straight up in the east and set straight down in the west, perpendicular to the horizon. how could you determine the circumference of the planet without any further observations? what is the circumference of the planet?
Answer:
Explanation:
2πr²
a 0.15 kg baseball is thrown with a speed of 46 m/s. it is hit striaght back at the pitcher with a speed of 78 m/s. what is the magnitude of the impulse exerted on the ball by the bat?
The impulse exerted on the ball by the bat is 4.8 Ns. The result is obtained by using the Impulse-Momentum Theorem.
What is Impulse-Momentum Theorem?The Impulse-Momentum Theorem states that impulse of an object equals to the change of the momentum. It can be expressed as
I = Δp
I = mΔv
Where
I = Impuls (Ns or kg m/s)Δp = change of momentum (Ns or kg m/s)m = mass of an object (kg)Δv = change of velocity (m/s)A baseball is thrown with
m = 0.15 kgv₀ = 46 m/sv₁ = 78 m/sFind the magnitude of the impulse exerted on the ball by the bat!
The impulse exerted by the bat is
I = mΔv
I = m(v₁ - v₀)
I = 0.15(78 - 46)
I = 0.15(32)
I = 4.8 Ns
Hence, the bat exerts the impulse of 4.8 Ns.
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a pulse has a 3 cycles each with a wavelength of .25 mm. what is the spatial pulse length in mm
The spatial pulse length is 0.75 mm, if the pulse has 3 cycles each with a wavelength of 0.25 mm.
Spatial pulse length in ultrasound imaging is used to determine for how much time an ultrasound wave exists in space. It is equal to the number of cycle times the wavelength of the pulse. A higher axial resolution is due to the shorter spatial length. Spatial pulse length can be decreased by using the higher frequency transducer or by heavier damping.
Spatial pulse length(SPL) = Number of cycle in each pulse × wavelength
Spatial pulse length(SPL) = 3 × 0.25 = 0.75 mm
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When Galileo observed Venus, he saw something that didn't fit with the Ptolemaic model for the SolarSystem. What was it?a. Venus shows phases, instead of always looking nearly full at times.b. Venus looks brighter at certain times than at others.c. Venus sometimes shows a crescent phase, and not just a constant, nearly-fullphase.d. Venus sometimes shows a nearly full phase, and not just a crescent.
When Galileo observed Venus, he saw something that didn't fit with the Ptolemaic model for the Solar System and it was option a. Venus shows phases, instead of always looking nearly full at times.
In October 1610, Galileo made his first telescopic views of Venus. He was eager to find out if Venus has phases like the Moon did. Before the telescope was created, Venus and the other planets appeared to be blazing stars. Galileo was able to determine that Venus circled the Sun, not the Earth, by observing the phases of the planet.
The centuries-old notion that the sun and planets rotated around Earth were disproved by Galileo Galilei's observation that Venus appeared in our sky in phases that were comparable to those of the Earth's Moon. This proved that Venus orbited the sun.
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A gas at and atmospheric pressure fills a cylinder. The gas is transferred to a new cylinder with three times the volume, after which the pressure is half the original pressure. What is the new temperature of the gas?
The new temperature of gas is 3/2 times of old temperature when a gas at and atmospheric pressure fills a cylinder.
Given the initial volume of cylinder = V1
The initial pressure of gas = P1
The initial temperature of gas = T1
Let the volume of new cylinder = V2
It is given that V2 = 3V1
Let the pressure of new cylinder = P2
It is given that P2 = 1/2P1
Let the new temperature of cylinder = T2
We know that from thermodynamic gas laws that PV = nRT where R is gas constant and n is the number of moles.
Then, P1V1/T1 = P2V2/T2 keeping n constant.
P1V1/T1 = 1/2P1 x 3V1/T2
T2/T1 = 3/2 = 1.5
Then T2 = 3/2T1
Hence the new temperature of gas is 3/2 times of old temperature.
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nuclear power is an important source of energy around the world. some countries, such as france and ukraine, generate more than 50 50 percent of their electricity from nuclear power plants. however, generating electricity from nuclear power plants can lead to environmental problems. (a) describe one potential negative environmental consequence from using nuclear power.
One potential negative environmental consequence from using nuclear power is the risk of radioactive contamination from an accident or improper disposal of nuclear waste.
One potential negative environmental consequenceRadioactive materials released into the environment can cause long-term health problems such as cancer and birth defects.In addition, nuclear waste can take thousands of years to decay, leading to long-term storage and disposal issues.One potential negative environmental consequence from using nuclear power is the risk of nuclear radiation. Nuclear radiation is caused by the release of radioactive particles emitted during a nuclear reaction, such as those that occur in a nuclear power plant. These particles can be spread through the air, water and land. This radiation can be harmful to humans, animals, plants and the environment as a whole.In addition to causing direct health risks to those exposed to it, nuclear radiation can also cause long-term contamination of the environment. This can include contamination of soil, water, and air by radioactive particles, as well as contamination of the food chain by bioaccumulation. As a result, this can lead to increased risk of cancer and other diseases, as well as reduced fertility in humans and animals. In some cases, these effects can last for generations.To learn more about One potential negative environmental consequence refer to:
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a sample of gas is heated frtom 35 c to 70 c correctly describe what happens to the vo;lme
In accordance with gas laws, when a sample of gas is heated frtom 35 c to 70 c , its volume increases.
Gas Laws are laws that govern how a gas's pressure, volume, and temperature are related. According to Charles' Law (one of the gas laws), at constant temperature, for a fixed amount of gas, its volume is directly proportional to its temperature.
Ideal gas law equation : PV=nRT
According to Charles's gas law, V ∝ T
V1/V2 = T1/T2
According to given question, T1 (in kelvin) = 35+273 = 308K
T2 (in kelvin) = 70+273 = 343K
Hence, V1/V2 = 308/343 = >1
Thus, we can infer that when temperature rises, an ideal gas' volume increases.
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A geosynchronous moon appears to remain
over one spot on a planet similar to Earth
with a day the same length of time but with a
different density.
PART 1
If the moon has an orbital radius of
5.17 × 10⁷ m , find its speed in orbit.
The value of the gravitational constant is
6.67259 × 10⁻¹¹ N · m²
/kg² .
Answer in units of m/s. Answer in units of
m/s.
PART 2
What is the mass of the planet if the mass
of the moon is 2.4 × 10²⁰ kg. ?
Answer in units of kg. Answer in units of
kg.
(1) The orbital speed of the moon is 463.3 m/s.
(2) The mass of the planet is 2.055 x 10²² kg.
What is the speed of the Moon?
The orbital speed of the moon is calculated by applying the following equation as shown below.
v = √ ( GM / r )
where;
M is the mass of the moonr is the radius of the moonv = √ ( 6.67 x 10⁻¹¹ x 2.4 x 10²⁰ / 5.17 x 10⁷ )
v = 17.6 m/s
The orbital speed of the planet is calculated as;
V = 2πr / T
since the planet is similar to earth, period of one complete rotation = 24 hours.
radius of planet = radius of earth = 6,371 km = 6,371,000 m
V = ( 2π x 6371000) / ( 24 x 60 x 60 s )
V = 463.3 m/s
The mass of the planet is calculated as follows;
V = √(GM/r)
V² = ( GM/r )
M = ( V²r ) / ( G )
M = ( 463.3² x 6371000) / ( 6.67 x 10⁻¹¹ )
M = 2.055 x 10²² kg
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what is the weight of a 80-kg astronaut at the surface of mars? what is the pull of gravity on the same astronaut if he is in orbit at 3400 km above the surface?
When we do this, we find that , the acceleration due to gravity at the surface of Mars, is equal to 296 newtons, which is the weight force exerted by the astronaut on Mars's surface, divided by 80 kilograms, which is the astronaut's mass .
what is the weight of a 80-kg astronaut at the surface of mars?
The mass of the astronaut is the same everywhere, that is, on all planets and in space. Therefore his mass will still be 80 kg.So an object or person on Mars would weigh 37.83% its weight on earth.We would take the mass given, 80 kg, and multiply it times the acceleration of Earth's downward pull on that mass, 9.8 m/s/s. So the weight on Earth is 784 newtons. So the weight of the same 80 kg mass on the moon is 133.28 N.Objects on the moon weigh 1/6 of the weight on earth. Hence, the weight of an object on earth is that on the moon.To learn more about mars refers to:
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A boat moves a distance of 3.0 km east and then 7.0 km north. What is the boat's displacement?
Answer:
Explanation:
sketch figure we will see the right triangle3^2 + 7^2 = 58 => displacement sqrt(58) =7.61 (km)what is the fundamental frequency (in hz) of a 0.548 m long tube, open at both ends, on a day when the speed of sound is 344 m/s?
The fundamental frequency (in hz) of a 0.548 m long tube is: 627.73 Hz
What is frequency?It can be said that it is the physical quantity that measures the number of times or cycles in which a wave is repeated over time in seconds. Its unit of measurement is the Hertz (Hz).
To solve this exercise the frequency formula we will use is:
λ = v / f
Where:
f= frequencyv= wave velocityλ= wavelengthGiven info
f=? HZv= 344 m/sλ = 0.548 m1 Hz = s˄ -1Applying the wavelength formula and clearing frequency we have:
f= 344 m/s / 0.548 m
f = 627.73 Hz
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A uniform line of charge with length 20.0 cm is along the x-axis, with its midpoint at x= 0. Its charge per length is +5.80 nC/m. A small sphere with charge -2.00 μC is located at x = 0, y = 5.00 cm. What is the magnitude of the force that the charged sphere exerts on the line of charge?
The magnitude of the force that the charged sphere exerts on the line of charge is zero.
What is electric force?Electric force is the attracting or repulsive interaction between any two charged things. Similar to any force, Newton's laws of motion describe how it affects the target body and how it does so.
The the magnitude of the force is = kQ₁Q₂/r²
= (9×10⁹) × 2.00 × 10⁻⁶ × 5.80 × 10⁻⁹ × dl/x²
But these forces are equal and in opposite direction, the magnitude of the force that the charged sphere exerts on the line of charge is zero.
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A 650 KW power engine of a vehicle of
mass 1.5 * 105 Kg is rising on an inclined plane of inclination
1 in 100 with a constant speed of 60 km/hr. Find the frictional
force between the wheels of the vehicle and the plane.
the frictional force between the wheels of the vehicle and the plane is 24000 N.
Power of engine (P) = 650 KW = 6,50,000 W
Mass of vehicle (m) = [tex]1.5[/tex] × [tex]10^{5}[/tex]
SinФ Inclination = 1/100
Speed (V) = 60 km/hr = 60 x 5 / 18 = 50 / 3 m/s
To find the frictional force between the wheels of the vehicle and the plane
F = f + mg SinФ
As, P = F V
P/V = f + 1.5 x [tex]10^{5}[/tex] x 10 x 1/100
6,50,000 x 3 / 50 = f + 15000
39,000 – 15,000 = f
Or f = 24,000 N
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If a moon feels an attractive force 1191 N from a planet, how much force will the moon feel if the distance between the planet and the moon is doubled?
Answer:
Explanation:
i don’t know
A 100kg is rolling down a hill with 129000J of energy, how fast is it going
In order to calculate the speed of an object, we need to use the formula:
Speed = (2 x Energy) / Mass
So, using the information given in the question:
Speed = (2 x 129000 J) / 100 kg
To find the speed, we need to divide the energy by the mass and then multiply by 2.
Speed = 2580 m/s
So, the 100kg object is rolling down the hill at a speed of 2580 m/s (or approximately 5800 mph)
Although frequently referred to a galvanized rigid conduit (GRC), the NEC® identifie thi wiring method a rigid metal conduit (RMC). Where trade ize 11/2 RMC i threaded (crewed wrenchtight) together between boxe or encloure, the maximum ditance permitted between trap (upport) i ___ feet. The ditance between the boxe for thi traight run of conduit i almot 200 feet
The National Electric Code (NEC) identifies rigid metal conduit (RMC) as a wiring method, even though it is often referred to as galvanized rigid conduit (GRC).
If 11/2 RMC is threaded (screwed wrench-tight) together between boxes or enclosures, the maximum distance allowed between supports is 130 feet. This straight run of the conduit is almost 200 feet, so it would require additional support to ensure proper electrical performance and safety.
When determining the proper support spacing for a straight run of conduit, it is important to consider factors such as the weight of the conduit, the conductors inside, and the number of bends in the conduit. Too few supports can create sagging and tension, which can damage the insulation of the conductors and potentially cause a short circuit.
Too many supports can be costly and difficult to install. Therefore, it is important to understand the proper support spacing requirements and follow the NEC guidelines.
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which is not true about geothermal energy? it is only available in limited areas. it cannot be used for cooling. it can be locally depleted due to heavy use. ground source heat pumps require an additional source of energy.
The statement which is not correct regarding geothermal energy is that it can be locally depleted due to heavy use.
Geothermal energy is the energy in the form of heat, which is generated inside the earth. Temperature inside the earth increases at the rate of 25°C/km. When temperature reaches 700-1300°C, the rock becomes magma. This magma comes in the mantle or upper core layer.
Due to the high temperature magma heats up the attached rock and thereby water inside the permeable layers of the Earth. This warm water is utilized to run the turbine and generate electricity. It is a renewable source of energy which cannot be depleted by anyone. So the statement C is not true.
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A stuntman drives a car of mass 885 kg east with a speed of 40 m/s.
a. If the car accelerates at a rate of –3 m/s2, how long will it take the car to go 200 m? (3 points)
b. The stuntman drives the car off a 120 m cliff while going 40 m/s. How long will it take the car to land? (3 points)
c. How far horizontally from the cliff will the car land? (4 points)
PLSSS I NEED THIS ASAP!!
It will take 13.33 s for the stuntman's car to reach 200 m. The car will land in 4.48 s and the car will land 178.72 m from the cliff horizontally.
How to calculate time and distance?a. To find the time it takes the car to go 200 m, we need to find the final velocity of the car, which can be calculated using the formula vf = vi + at, where vi is the initial velocity, a is the acceleration, and t is the time.
Since the car is slowing down, the acceleration is negative, so we can use the formula:
t = (vf - vi) / a = (0 - 40) / -3 = 13.33 s
b. To find the time it takes the car to land, we need to find the time it takes for the car to fall the 120 m height. This can be found using the formula:
t = √(2d / g), where d is the distance fallen and g is the acceleration due to gravity (9.8 m/s²).
t = √(2 x 120 / 9.8) = 4.48 s
c. To find the horizontal distance the car lands from the cliff, we need to find the horizontal distance the car travels during the time it falls. This can be found using the formula:
d = vi x t = 40 x 4.48 = 178.72 m.
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a student must conduct an experiment to verify the conservation of momentum. cart x and cart y travel toward each other and eventually collide, as shown in the figure. the student has access to the two carts, one mass balance, and two motion detectors. if the mass of each cart is known, how should the student arrange one or both motion detectors so that the student can collect enough information about the motion of the carts, in order to verify the conservation of momentum of the system?
The student should arrange the motion detectors in a way that allows them to measure the velocity of both carts before and after the collision.
The student could place one detector at the start of the collision and one at the end of the collision. This would allow them to measure the velocity of each cart before and after the collision. The mass of each cart can be measured using the mass balance.
With this information, the student can calculate the momentum of each cart before and after the collision and verify that the total momentum of the system is conserved.
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