1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Delicious77 [7]
3 years ago
7

A hollow ball, rolls down a hill that is 9 meters high. What is the velocity at the bottom of the hill?

Physics
1 answer:
jeyben [28]3 years ago
3 0

Answer:

13.28m/s

Explanation:

Given

Distance covered by the ball S = 9m

initial velocity u = 0m/s

Required

velocity at the bottom of the hill (final velocity)

Using the equation of motion

v² = u²+2gS

v² = 0²+2(9.8)(9)

v² = 18(9.8)

v² = 176.4

v = √176.4

v = 13.28m/s

Hence the velocity at the bottom of the hill is 13.28m/s

You might be interested in
Please helppp....What are 5 examples of real science
valentina_108 [34]

Answer:

dynamics

kinematics

fluid mechanisms

earth science and

physics

8 0
3 years ago
You throw a rock upwards; it rises and then falls back down. We know that the acceleration due to gravity is 9.8 m/sec2 near the
Leokris [45]

Answer:

Acceleration = 9.8 m/sec2

Explanation:

We know that the acceleration due to gravity is 9.8 m/sec2 near the surface of earth.

Remember  that the gravity is always affecting everything on earth at every instant, even the rock at the very top of it's trajectory. It doesn't mind if the velocity is zero for an instant or if there's air resistance, the gravity force is there, and always aims towards the center of the earth.

So for all the trajectory of the rock, gravity is 9.8 m/sec2

6 0
4 years ago
In this system, ___________________ energy from the sunlight causes the solar panel to create ___________________ energy which f
Alex_Xolod [135]

Answer:

solar, heat,heat, light

5 0
3 years ago
An electromagnetic wave in vacuum has an electric field amplitude of 470 V/m. Calculate the amplitude of the corresponding magne
lapo4ka [179]

Answer:

Magnetic field, B = B=1.56\times 10^{-6}\ T

Explanation:

It is given that,

The amplitude of an electromagnetic wave, E = 470 V/m

We need to find the amplitude of the corresponding magnetic field. The relation between electric and magnetic field is :

B=\dfrac{E}{c}

Where

c is the speed of light

B=\dfrac{470\ V/m}{3\times 10^8\ m/s}

B = 0.00000156

B=1.56\times 10^{-6}\ T

So, the amplitude of the corresponding magnetic field is 1.56\times 10^{-6}\ T. Hence, this is the required solution.

6 0
4 years ago
Suppose a proton ( = 1. 67×10^−27 kg) is confined to a box of width = 1. 00×10^−14 m (a typical nuclear radius).
dimulka [17.4K]

Answer:

22e837281949222324

Explanation:

3 0
3 years ago
Other questions:
  • Which waves are longitude waves? Check all that apply.
    12·1 answer
  • A boat has a mass of 6800 kg. Its engines generate a drive force of 4100 N due west, while the wind exerts a force of 800 N due
    11·1 answer
  • When you do work on a object some of your energy is ________ to that object?
    13·1 answer
  • (4) A stainless steel storage tank contains 5 kg of carbon dioxide gas and 7 kg of argon gas. How many kmoles are in the tank?
    15·1 answer
  • Two neutral metal spheres on wood stands are touching. A negatively charged rod is held directly above the top of the left spher
    6·1 answer
  • A solenoidal coil with 22 turns of wire is wound tightly around another coil with 330 turns. The inner solenoid is 21.0 cm long
    10·1 answer
  • 1000 kg of water initially at 6 m/s runs through a hydro-generator. If the water leaves the generator at velocity of 4 m/s, and
    8·1 answer
  • A neighborhood transformer on the top of a utility pole transforms 19.0 kV 60.0 Hz alternating voltage down to 120.0 V to be use
    12·1 answer
  • An Olympic diver is on a diving platform 8.60 m above the water. To start her dive, she runs off of the platform with a speed of
    12·1 answer
  • Which statement is a hypothesis?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!