Answer:
B convection MERRY CHRISTMAS
Explanation:
A bowling ball of mass 10.2 kg moves in a
straight line at 3.03 m/s.
How fast must a Ping-Pong ball of mass
3.309 g move in a straight line so that the two
balls have the same momentum?
Answer in units of m/s.
Answer:
v = 9341.19 [m/s]
Explanation:
Linear momentum is defined as the product of mass by Velocity. In this way by means of the following equation, we can calculate the momentum.
[tex]P=m*v[/tex]
where:
P = momentum [kg*m/s]
m = mass = 10.2[kg]
v = velocity = 3.03 [m/s]
Now replacing, we have:
[tex]P=10.2*3.03\\P = 30.91 [kg*m/s][/tex]
Now the ping-pong mass is 3.309 [g] or 0.003309 [kg]
We can clear the value for v from the equation above.
[tex]v = P/m\\v = 30.91/0.003309\\v = 9341.19 [m/s][/tex]
A bicyclist is riding at a tangential speed of 13.2 m/s around a circular track. The magnitude of the centripetal force is 377 N, and the combined mass of the bicycle and rider is 86.5 kg. What is the track's radius?
Answer:
40m approximately
Explanation:
Given
Force =377N
Mass =86.5kg
Velocity =13.2m/s
Required
Radius of the track
The expression for the centripetal force acting on the cyclist is
F=mv²/r
Make r subject of the formula
r= mv²/F
Substitute
r=86.5*13.2²/377
r= 15,071.76/377
r=39.97
r=40m approximately
The radius of track will be "40 m".
Given:
Force,
F = 377 NMass,
m = 86.5 kgVelocity,
v = 13.2 m/sAs we know the formula,
→ [tex]F = \frac{mv^2}{r}[/tex]
or,
→ [tex]r = \frac{mv^2}{F}[/tex]
By substituting the values, we get
[tex]= \frac{86.5\times 13.2^2}{377}[/tex]
[tex]= \frac{15071.76}{377}[/tex]
[tex]= 39.97[/tex]
or,
[tex]= 40 \ m[/tex]
Thus the above answer is right.
Learn more:
https://brainly.com/question/4137024
Which shows a 2 kg cart traveling at a constant speed in a horizontal circle of radius 3 m the magnitude of the centripetal force of the car is 24 N what is the speed of the cart
Answer:
6m/s
Explanation:
Centripetal force is expressed according to the formula;
F = mv²/r
m is the mass of the body
v s the speed of the cart
r is the radius
Given
M = 2kg
r = 3m
Force F = 24N
Substitute into the formula and get v
24 = 2v²/3
24×3 = 2v²
72 = 2v²
v² = 72/2
v² = 36
v =√36
v = 6m/s
Hence the speed of the cart is 6m/s
What does equilibrium mean
Answer:
a state in which opposing forces or influences are balanced.
Explanation:
Are electrolytes the same as ions?
Answer:
no
Explanation:
bc electrolytes r like fuel
A rocket engine uses fuel and oxidizer in a reaction that produces gas particles having a velocity of 1380 ms The desired thrust is to be 195000 N 16. what must be the fuel/oxidizer consumption rate (in kg s1)? 16 17. If the initial weight of the rocket is 125000 N, what is its initial acceleration? 17 18. What are the weight and acceleration of the rocket at t 15.0 s after 18. ignition? 19. What are the weight and acceleration of the rocket att 20.0 s after ignition?
Answer:
a. 141.3 kg/s b. 5.49 m/s² c. i. 104228.9 N ii. 8.53 m/s² d. i. 97305.2 N ii. 9.84 m/s²
Explanation:
a. What must be the fuel/oxidizer consumption rate (in kg s1)?
The thrust T = Rv where R = mass consumption rate and v = velocity of rocket. Since T = 195000 N and v = 1380 m/s,
R = T/v = 195000 N/1380 m/s = 141.3 kg/s
b. If the initial weight of the rocket is 125000 N, what is its initial acceleration?
We also know that thrust T - W = ma since the rocket has to move against gravity. where M = mass of rocket = W/g = 125000 N/9.8m/s² = 12755.1 kg, W = weight of rocket = 125000 N, a = acceleration of rocket and T = thrust = 195000 N.
So, T - W = Ma
195000 N - 125000 N = (12755.1 kg)a
70000 N = ma
a = 70000 N/12755.1 kg = 5.49 m/s²
c. What are the weight and acceleration of the rocket at t 15.0 s after ignition?
We know that the loss in mass ΔM = mass consumption rate × time = Rt. Since R = 141.3 kg/s and t = 15 s,
ΔM = 141.3 kg/s × 15 = 2119.5 kg
The new mass is thus M = M - ΔM = 12755.1 kg - 2119.5 kg = 10635.6 kg
i.The weight after 15 seconds is thus W' = M'g = 10635.6 kg × 9.8m/s² = 104228.9 N
ii. Since T - W' = M'a. where M' is our new mass and a our new acceleration,
a = (T - W')/M'
= (195000 N - 104228.9 N)/10635.6 kg
= 90771.1 N/10635.6 kg
= 8.53 m/s²
d. What are the weight and acceleration of the rocket at 20.0 s after ignition?
We know that the loss in mass ΔM" = mass consumption rate × time = Rt. Since R = 141.3 kg/s and t = 20 s,
ΔM" = 141.3 kg/s × 20 = 2826 kg
The new mass is thus M" = M - ΔM" = 12755.1 kg - 2826 kg = 9929.1 kg
i. The weight after 20 seconds is thus W" = M"g = 9929.1 kg × 9.8m/s² = 97305.2 N
ii. Since T - W" = M"a. where M" is our new mass and a our new acceleration,
a = (T - W")/M"
= (195000 N - 97305.2 N)/9929.1 kg
= 97694.8 N/9929.1 kg
= 9.84 m/s²
You and your family are traveling to daytona beach for a vacation and your dad wants to get there in 7 hours. If daytona is 725 kilometers away how fast will he have to drive to get there on time
Answer:
103.57 Km/h
Explanation:
From the question given above, the following data were obtained:
Distance = 725 Km
Time = 7 hours
Speed =?
Speed can be defined as the distance travelled per unit time. Mathematically, it is expressed as:
Speed = Distance /time
With the above formula, we can calculate how fast he will drive (i.e the speed) in order to get there on time. This is illustrated below:
Distance = 725 Km
Time = 7 hours
Speed =?
Speed = Distance /time
Speed = 725 / 7
Speed = 103.57 Km/h
Thus, to get there on time, he will drive with a speed of 103.57 Km/h
After a recent snow storm, you decide to sled down a hill in Fairmount Park. You take a running start and hit the slope with an initial velocity of 4.9 m/s. You then begin to accelerate at 4.2 m/s^2 for 4.7 seconds. How many meters will you travel in that time?
Here's what you need to know below:
Answer:
69.42 m
Explanation:
From the question given above, the following data were obtained:
Initial velocity (vᵢ ) = 4.9 m/s
Acceleration (a) = 4.2 m/s²
Time (t) = 4.7 s
Displacement (Δx) =?
Thus, we can obtain the displacement by using the following formula:
Δx = vᵢt + ½at²
Δx = (4.9 × 4.7) + (½ × 4.2 × 4.7²)
Δx = 23.03 + (2.1 × 22.09)
Δx = 23.03 + 46.389
Δx = 69.419 ≈ 69.42 m
Thus, the distance travelled is 69.42 m
What is a volcano? Mention its
major.components
.
☯ Answer: [tex] [/tex]
Volcano is a type of mountain or a hill which shaped conically contains of lava, volcanic dusty ash, hot air vapours, and different types of tonics gases which comes from earth's crust.
[tex]\\[/tex]
✪ Major components of volcano :
Magma chamberConduitsVentsCratersSlopes[tex]\\[/tex]
❈ Types of volcanoes :
Ciner coned volcanoStrato volcanoShield volcanoGravitational attraction exhibited by an object increases with increasing mass. What does this mean?
if it has more mass it will have more Gravitational attraction
The statement "gravitational attraction exhibited by an object increases with increasing mass" means that as the mass of an object increases, its gravitational attraction to other objects also increases.
What is Newton's Law of Universal Gravitation?
Gravitational attraction is the force of attraction between two objects due to their masses. According to Newton's Law of Universal Gravitation, this force is directly proportional to the product of the masses of the two objects and inversely proportional to the square of the distance between them.
Here in the Question,
According to the statement "gravitational attraction exhibited by an object increases with increasing mass" as an object's mass rises, so does its gravitational pull on other objects. its gravitational attraction to other objects also increases. This can be observed in everyday life - for example, the Earth has a greater gravitational attraction to more massive objects than to less massive objects.
This relationship between mass and gravitational attraction is important in understanding the behavior of objects in space. For example, the greater the mass of a planet, the stronger its gravitational attraction, which in turn affects the orbits of nearby objects such as moons or satellites.
It is also important to note that the distance between objects also affects the gravitational attraction, as stated by Newton's law. The closer two objects are to each other, the stronger their gravitational attraction.
Therefore, the statement "gravitational attraction exhibited by an object increases with increasing mass" refers to the fact that mass is one of the factors that determine the strength of the gravitational force between two objects.
To learn about Earth's gravitational force click:
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A ball is projected vertically upward from the surface of the Earth with an initial speed of +49 meters per second. The ball reaches its maximum height in 5.0 seconds. What is the maximum height reached by the ball?
chap 13
activity 13.5 class-10
Answer:
ummm im confused
Which acid is naturally found in foods and can be safe to eat?
Answer:
Citric
Explanation:
Citric and acetic acids are naturally found in foods and can be safe to eat.
Answer:
citrus
Explanation:
i think i am sure
Helium gas is compressed by an adiabatic compressor from an initial state of 14 psia and 50°F to a final temperature of 320°F in a reversible manner. Determine the exit pressure of helium.
Answer:
The value is [tex]P_2 = 40.54 \ psla[/tex]
Explanation:
From the question we are told that
The initial pressure is [tex]P_1 = 14\ psla[/tex]
The initial temperature is [tex]T_1 = 50 \ F = (50 - 32) * [\frac{5}{9} ] + 273 = 283 \ K[/tex]
The final temperature is [tex]T_2 = 320 \ F = (320 - 32) * [\frac{5}{9} ] + 273 =433 \ K[/tex]
Generally the equation for adiabatic process is mathematically represented as
[tex]PT^{\frac{\gamma}{1- \gamma} } = Constant[/tex]
=> [tex]P_1T_1^{\frac{\gamma}{1- \gamma} } = P_2T_2^{\frac{\gamma}{1- \gamma} }[/tex]
Generally for a monoatomic gas [tex]\gamma = \frac{5}{3}[/tex]
So
[tex]14 * 283^{\frac{\frac{5}{3} }{1- [\frac{5}{3} ]} } =P_2 * 433^{\frac{\frac{5}{3} }{1- [\frac{5}{3} ]} }[/tex]
=> [tex]14 * 283^{-2.5} =P_2 * 433^{-2.5}[/tex]
=> [tex]P_2 = 40.54 \ psla[/tex]
Determine the force of gravity on a 1600 kg spaceship: near the surface of the Moon.
[The radius of the Moon is 1.74 x 106 m and its mass is 7.35 x 1022 kg.]
Answer:
yahoo has the answer im telling you
Explanation:
5 types of convertible energy
Answer:
Sound energy is converted into electrical energy in a microphone.
Electrical energy is converted into sound energy in a loud speaker.
Electrical energy is converted into mechanical energy in a motor.
Mechanical energy is converted into electrical energy in a generator.
Explanation:
mark me as the brainlist:)
If the total energy of a system is 2000J, and the kinetic energy is 500J, what does the potential energy in the system have to be?
Answer:
Potential energy in the system = 1,500 J
Explanation:
Given:
Total energy of a system = 2,000 J
Kinetic energy = 500 J
Find:
Potential energy in the system
Computation:
Total energy of a system = Kinetic energy + Potential energy
2,000 J = 500 J + Potential energy in the system
Potential energy in the system = 1,500 J
HELP with this question.....plzzz
The force on the cork is the weight of all the water that's directly over it. That's the water in a tall, skinny cylinder that's 2.0m long and has a base area of 2 cm^2.
Find the volume of that cylinder, use the density to find the mass of the water in that volume, then m•g to find the weight of that mass.
Write four factors that affect the speed of sound
in a
gas medium.
Answer:
(a) Effect of pressure :
(a) Effect of pressure :(b) Effect of temperature :
(a) Effect of pressure :(b) Effect of temperature :(c) Effect of density :
(a) Effect of pressure :(b) Effect of temperature :(c) Effect of density :(d) Effect of moisture (humidity):
(a) Effect of pressure :(b) Effect of temperature :(c) Effect of density :(d) Effect of moisture (humidity):(e) Effect of wind:
Explanation:
I HOPE THIS HELPS YOU♡♧horizontal displacement?
Answer:
....
Explanation:
HELPPPPPPPPPPPPPPPPPPPPPPPPPP
Answer:
C
Explanation:
through the desk....here desk is the student's medium to hear the sound. its oblivious because when he lifts his head away from the desk he hears nothing else
A package is dropped from an airplane flying horizontally. As the plane continues on, where will the package hit the ground with respect to the plane? (ignore air resistance)
Position A
Position B
Position C
Answer:
Position B
Explanation:
The package when it is dropped from the airplane will still be traveling forward at the same speed as the aircraft. Since air resistance is ignored there is nothing affecting its horizontal velocity, so the package will hit the ground underneath the plane as they both move forward.
A lion with a mass of 190 kg is chasing a gazelle with a mass of 15 kg. The distance between the lion and the gazelle is 2 meters. a. How much gravitational force does the lion exert on the gazelle? b. How much gravitational force does the gazelle exert on the lion?
Answer:
Explanation:
with a mass of 190 kg is chasing a gazelle with a mass of 15 kg. the distance between the lion and the gazelle is 2 meters. how much gravitational force does the lion exert on the gazelle? ... In which figure is de bc ? a. figure 1 b. figure 2 c. figure 3 d. figure 4... Mathematics 3 21.06.2019 15:00.
what happened to the kinetic energy when the velocy of a moving body is doubled?
Answer:
If velocity is doubled, Kinetic Energy increases by 4 times. Kinetic energy of a body is the energy possessed by it, by virtue of its motion, i.e. if the body is moving it will always have kinetic energy.Nov 1, 2018
Explanation:
Answer:
If velocity is doubled, Kinetic Energy increases by 4 times. Kinetic energy of a body is the energy possessed by it, by virtue of its motion, i.e. if the body is moving it will always have kinetic energy :)
Explanation:
hope this helps <3
why do cars stay in motion
Answer:
cars stay in motion because its normal for objects to keep. doing what they are doing unless acted upon
Definition of molecular machine
What might cause a shotgun to explode?
this is due in like 10 mins so help me please
A 20 kg sled is being pulled across a horizontal force at a constant velocity the pulling force has a magnitude of 80 N and it's directed at an angle of 30° above the horizontal determine the coefficient of kinetic friction
Answer:
0.58
Explanation:
Using the frictional force formula expressed as;
[tex]F_f = \mu R\\[/tex]
[tex]\mu[/tex] is the coefficient of kinetic friction
R is the normal reaction
[tex]\mu = \frac{F_f}{R}[/tex]
[tex]F_f = Wsin \theta\\R = W cos\theta\\\mu = \frac{Wsin \theta}{W cos \theta}\\\mu = \frac{sin\theta}{cos \theta} \\\mu = tan \theta[/tex]
Given
[tex]\theta = 30^0\\\mu = tan 30^0\\\mu = 0.58[/tex]
hence the coefficient of kinetic friction is 0.58
Which item is a pure substance?
A. 10 carat gold
B. Solid gold
C. Cake mix
D. Ocean water
Answer:
Solid gold. 10 carat indicates gold purity is not 100%. For 24 karat gold is pure gold.
Explanation:
Answer:
solid gold
Explanation:
Examples of pure substances include tin, sulfur, diamond, water, pure sugar (sucrose), table salt (sodium chloride) and baking soda (sodium bicarbonate). Crystals, in general, are pure substances. Tin, sulfur, and diamond are examples of pure substances that are chemical elements.
A man pulls a 10 kg box at constant speed across the floor with a rope. The tension in the rope is 120 N at an angle of 30°.
What is the magnitude of the normal force and the force of friction?
Answer:
98n
Explanation:
