Answer:
x×y=2×2=4. 4×z=4×3=12. 4+12=16
Which velocity time graph represents the motion of an object moving with constant acceleration
Answer:
A
plss mark me brainliesttt
A projectile is launched vertically with an initial velocity of 50 m/s. How long would it take to reach the top of the launch?
Answer:
Explanation:
Givens
vi = 50 m/s
vf = 0
a = - 9.81
t = ?
Formula
t = (vf - vi)/a
Solution
t = (0 - 50)/-9.81
t = 5.097
Notice that a is made into a minus. It does not mean subtract. It means that the direction of the projectile and gravity must go in opposite directions. You will find that direction is a critically important consideration in physics.
Answer:
It'd take it 5.10 seconds
Explanation:
At the top of the launch, it is maximum height, h
formular derivation :
At maximum height, final velocity, v is zero
From first newtons equation:
[tex]{ \sf{v = u + gt}}[/tex]
v is the final velocity
u is the initial velocity
g is acceleration due to gravity
t is the time taken
but v is zero:
[tex]0 = u + gt \\ gt = u \\ t = \frac{u}{g} [/tex]
since it is vertical motion, u = usin(theta), where angle is 90°
[tex]{ \boxed{t = \frac{u \sin( \theta) }{g} }}[/tex]
t is the time taken to reach the top of the launch:
substitute, taking g to be 9.8 m/s²
[tex]t = \frac{50 \times \sin(90 \degree) }{9.8} = \frac{50}{9.8} \\ \\ { \boxed{ \boxed{time = 5.10 \: seconds}}}[/tex]
Someone give me the answer to this
Answer: A
Explanation: I looked it up on the internet
Answer:
the answer is A
Explanation:
protein helps build and repair tissues
how will this substance ease the pain?
Answer:
There are two main types of OTC pain medicines: acetaminophen (Tylenol) and nonsteroidal anti-inflammatory drugs (NSAIDs). Aspirin, naproxen (Aleve), and ibuprofen (Advil, Motrin) are examples of OTC NSAIDs. If OTC medicines don't relieve your pain, your doctor may prescribe something stronger
how do i get the correct answer for 0.429m to mm
the answer for 0.429m to mm is 429
Answer:
0.429m=429 mm
Explanation:
Since there are 1,000 millimeters per meter, you need to multiply by 1,000 to convert from meters to millimeters.
What is the speed of a walking person in m/s if the person travels 2000 m in 35 minutes?
Distance = 2000m
Time = 35 minutes = 35×60 sec = 2100 sec
We know, Speed = Distance/Time
Therefore, Speed
= 2000m/2100s = 20/21 m/s
Answer: 20/21 m/s
Hope it helps! Please do comment
Can anyone help if u know it pls!!
Answer:
(1)
H² = B² × L²
H² = (9.2)² × (5.2)²
H² = 84.64 × 27.04
H² = 2288.6656
H = √ 2288.6656
H = 47.84
Answer:
Use Pythagorean theorem
19) A² + B² = C²
5.2² + 9.2² = C²
C = √111.68
C = 10.567875...
C ≈ 10.6
21) A² + B² = C²
B² = C² - A²
B² = 7.2² - 5.3²
B = √23.75
B = 4.873397...
B ≈ 4.9
Is a dog chasing its tail acceleration
No. A dog chasing its tail is just an animal running around in circles.
The dog's MOTION, however, IS accelerated motion, since the DIRECTION of its motion is constantly changing.
A a dog chasing its tail cannot be considered as acceleration.
What is acceleration?Acceleration is the rate at which velocity changes over time, both in terms of speed and direction.
A point or object moving in a straight line is accelerated if it accelerates or decelerates. Even if the speed is constant, motion on a circle is accelerated because the direction is constantly changing.
For example, if a car accelerates as it turns a corner at constant speed, it is doing so because its direction is changing.
The faster you turn, the faster you accelerate. When velocity changes in magnitude (increase or decrease in speed), direction, or both, there is an acceleration.
Thus, as there is no change in either speed or direction in scenario in which a dog chases its tail, it is not considered as acceleration.
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10 Claims · Evidence · Reasoning Suppose
that 273 g of one of the substances listed
above displaces 26 mL of water. What is the
substance? Explain your reasoning.
From the table shown we can see that the substance that has a density of 10.50g/cm³ is Silver. Hence the required substance is silver
Density is the ratio of the mass of an object to its volume. Mathematically,
Density = Mass/Volume
Given the following from the question
Mass = 273g
Volume of water = 26mL
Convert the volume to cm³
1ml = 1cm³ Hence;
26mL = 26cm³
Get the density of the object
Density = 273g/26cm³
Density = 10.50g/cm³
Hence the required density is 10.50cm³. From the table shown we can see that the substance that has a density of 10.50g/cm³ is Silver. Hence the required substance is silver
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HEEEELP!!!!!HOW DOES SPEED TURN INTO A FORMULA.
Heat is added to a 2kg piece of ice at a rate of 793kW. How long will it take for ice to melt if it was initially 0?
Answer:
0.84 s
Explanation:
Step 1
Given information:
Mass of the ice (m) = 2.0 kg
Heat transfer rate (Q/T) = 793.0 kW
Latent heat of fusion of ice (Lf) = 334 kJ/kg
[tex] \frac{Q}{T} = \frac{mLf}{T} [/tex]
Substituting the corresponding values we have:
[tex]793.0 kW= \frac{2.0kg(334 kJ/kg)}{T} \\ T = \frac{2.0kg(334 kJ/kg)}{793.0kW} = \frac{668kJ}{793kW} \\ = 0.84s[/tex]
Write about any 8 areas of field where physics is applied .Illustrate it with examples .
Explanation:
In construction.When constructing roads, buildingIn Engineering, when engineering we use physics such as calculations.At homeIn industries, industries use chemicals and so on.In tailoring, we use the knowledge of physics like when sowing.In carpentry, we use calculations.In Hospitals, we use physics we balancing In Sites, we use energy.Physics is a discipline that its applications cut across all fields. Ranging from banking, cooking, transportation, lecturing, medicine, engineering etc. It is the bed rock of engineering because all aspect of engineering involves the application of Physics.
Some of the fields where Physics is applied are:
a) Lecturing: This field requires the continuous dissemination of Physics knowledge to students from one level to another level.
b) Medicine: The various applications of physics in medicine can not be over-emphasized. This is because medicine involves the use of ultrasound, ionizing and non-ionizing radiation, magnetic resonance etc.
c) Electrical Engineering: In this field, the basic knowledge of Physics is applied to circuits, boards and electrical components.
d) Civil Engineering: The knowledge of stress, strain, shear, force, torque, weight etc are used in a lot of deductions.
e) Broadcasting station: This field make use of a lot of Physics principles so as to increase awareness and pass information. Thus the frequency of a broadcasting station determines her area coverage.
f) Transportation: As all vehicles consists of electrical devices, then the knowledge of Physics can bot be avoided.
g) Communication: Ranging from GPS, GPRS, Data transmission, voice call, email etc requires the knowledge and application of Physics.
h) Archaeology: Though not a related to Physics, but it requires the application of it. Radio-dating and carbon-dating are required to determine the age of some ancestral objects or artifacts.
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Select the correct answer.
Which statement is true?
A.
Inertia causes bodies to slow in their motion, unless they’re pushed by a force.
B.
Inertia resists changes to the state of motion of a body.
C.
Inertia decelerates a body.
D.
Inertia is due to friction.
a plane is traveling at 250 m/s north after being in the air for 1 hour, what is the displacement?
Answer:
900,000 meters of displacement.
Explanation:
250x60x60 because it is meters per second and needs to be converted to a full hour.
Oketch's house has a septic tank with dimensions as shown below. 6m 2m 3m a) What is the capacity of the septic tank in; (1) m (ii) in litres cm3
[tex] \large \mathfrak{Solution : }[/tex]
Capicity of the septic tank is :
6m × 2m × 3m24 m³(i) capicity = 24 m³
(ii) capicity = 24 × 1000000 = 24000000 litres (cm³)
What is "the cloud"?
Answer:
Cloud is a condensed from of atmospheric moisture consisting of small water droplets.
Clouds cause rainfall and snow fall.
Different types of clouds are found in the atmosphere. Some main types of them are cirrus, cumulus, nimbus, and stratus. Most clouds are generated by the cooling of air as it rises.
A car is travelling down a road. A displacement vs. time graph for the car is shown below. What is the velocity of the car 6 s into the car's motion?
May you attach your displacement vs. time graph picture and resend the question once again then I might be able to help you
When dropped from rest, any object will fall a total distance of 19.6 m in the first 2 seconds of its fall. How far
does the object fall just during the 2nd second (i.e., from time t= 1 s to t = 2 s)?
Answer: The acceleration due to gravity increases the velocity of a falling object by 9.8 m/s per
second. Answer B is wrong because velocity increases. Answer C is wrong because the
distance increases every second. Ans. E is wrong because the derivative of distance with
respect to time gives the velocity, not the acceleration.
Explanation:
help me i dont understand
Answer:
It's D
Explanation:
because the kinetic energy of the turbines produces electric energy
What is the velocity of the objected represented by the graph between 14.0 s and 18.0 s?
240 m/s
- 15 m/s
- 120 m/s
120 m/s
2. Which activity requires a scientist to use
creativity?
A. observing the behavior of a mouse in a maz
B. meffuring the distance an object travels
during an experiment
C. designing an experiment to test the
relationship between force and slope
D. repeating an experiment several times to
determine whether the results are valid
Answer:
c please mark me as brainiest
Explanation:
Answer:
Sorry i didn't know about this question and sorry please don't mind...Explanation:
bro can you please help me can you please mark's me as brainliests please...ok seriously though
Gabriel accidently drops a glass on the kitchen floor, and it shatters. Which statements describe the physical change that has occurred? Check all that apply.
Answer:
the shape of the glass change and the size of the glass also change
At the scene of an accident, a police officer notices that the skid marks of a car are 10m long. The officer knows
that the typical deceleration of a car when skidding is 45 m/s?. What can the officer estimate for the original
speed of the car?
Answer:
30 m/s
Explanation:
0^2= Vi^2+ 2 (-45)(10)
The original speed of the car is equal to 30m/s which can be calculated from the third equation of motion.
What is the equation of motion?Equations of motion explain the basic concept of motion such as the position, velocity, or acceleration of an object several times. These three equations of motion can be governed by the motion of an object in 1D, 2D, and 3D.
There are three equations of motion that can be used to find displacement(s), velocity (v or u), time(t), and acceleration(a). The third equation of motion can be represented as follows:
v² = u² + 2aS
Given, the car is deaccelerated by 45m/s².
The distance covered by the car before it stops, S = 10 m
The final velocity of the car, v = 0 as it comes to rest.
We have to calculate the initial velocity of the car by using the third equation of motion:
(0)² = (u)² + 2 (-45) × (10)
u²= 900
u = 30 m/s
Therefore, the original speed of the car is 30 m/s.
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¿Qué distancia recorre en 2 horas?
Answer:
tienes que dar más información
Explanation:
.
Kepler's Laws of Motion explain why ________.
Answer:
Kepler's three laws of planetary motion can be stated as follows: (1) All planets move about the Sun in elliptical orbits, having the Sun as one of the foci. ... (3) The squares of the sidereal periods (of revolution) of the planets are directly proportional to the cubes of their mean distances from the Sun.
What are the differences and similarities between strong nuclear forces and electric force???
Answer:
the similarities is that that they both act one charged particles
Explanation:
hope that helps>3
Explain why circular motion includes continuous
acceleration even when the speed does not change
In vector diagrams, what does the length of the arrow tell you?
Answer:
The length of the arrow tells you the size of the quantity in the vector diagram.
The direction of the arrow simply tells you the direction
Answer and Explanation:
A vector in this sense is a thing that has both magnitude (length) and direction.
Say you're walking at a speed of 5 miles per hour. If you keep walking in a straight line, then in two hours you will have walked 10 miles.
This doesn't give any information about where you started or any information about where you ended up after those 2 hours.
This is because "speed" is a scalar. It's a number with no associated geometry. It's just a magnitude. It's the magnitude of velocity.
Velocity is a vector.
Look on a map at where you are right now. Call that the center of the circle. Draw the circle with a 10 mile radius around where you are now.
The length of the arrow represents all of the possible places you could be after a two hour walk.
Which direction the arrow was pointing is what allows your friends to meet you there without checking along a ~63 mile path to find you or searching ~314 square miles to find you if you slowed down or stopped off along the way.
PLS FAST WILL GIVE BRAINLIEST Examine the two isotopes.
oxygen-16
oxygen-17
In regards to subatomic particles, how are these two isotopes the same, and how are they different?
Answer:
both of those numbers have 8 protons
Explanation:
How do you feel about the way land is used around you?
Answer:
I feel that people hurt the land and are destroying. I think they aren't using the land for the right reasons.
