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
sineoko [7]
3 years ago
13

3. An explosion of gas from a Hawaiian volcano blows a bunch of rocks into the sky. Each has 2000J of

Physics
1 answer:
anzhelika [568]3 years ago
4 0

Answer: 3.906kg

Explanation:

K.E = 2000J

V = 32m/s

m =?

K.E = 1/2MV2

2000 = 1/2M x (32^2)

2000 = 1/2M x 1024

2000 = 512M

M = 2000/512

M = 3.906kg

You might be interested in
Which activity would be the best choice foir a lifelong fitness program
Fantom [35]

I think jogging/running/walking because you don't need any equipment and you can structure around it on your own time.

7 0
3 years ago
Read 2 more answers
a container of water is knocked off a 10.0 meter high ledge with a horizontal velocity of 1.00 meters/second. calculate the time
Evgen [1.6K]

Answer:

1.43 s

Explanation:

The time it takes for the container to reach the ground is determined only by the vertical motion of the container, which is a free-fall motion, so a uniformly accelerated motion with a constant acceleration of g=9.8 m/s^2 towards the ground.

The vertical distance covered by an object in free fall is given by

S=ut + \frac{1}{2}at^2

where

u = 0 is the initial vertical speed

t is the time

a= g = 9.8 m/s^2 is the acceleration

since u=0, it can be rewritten as

S=\frac{1}{2}gt^2

And substituting S=10.0 m, we can solve for t, to find the duration of the fall:

t=\sqrt{\frac{2S}{g}}=\sqrt{\frac{2(10.0 m)}{9.8 m/s^2}}=1.43 s

3 0
3 years ago
If a light ray from a candle strikes a mirror at an angle of 40° with the normal, at what angle will the ray reflect?
pav-90 [236]

Answer:

the correct answer is b: 25

8 0
3 years ago
An object with height h, mass M, and a uniform cross-sectional area A floats upright in a liquid with density ρ.
soldi70 [24.7K]
** Missing information: The vertical distance from surface of liquid to bottom of the object is sought in this question, with the condition that the object is at equilibrium **

Ans: The vertical distance = y = M/(ρA)

Explanation:

Support the vertical distance = y

Object's density = M/(A*h) (since A*h = volume)

By applying the condition, 

(M/(Ah))/ρ = y/h

M/(ρAh) = y/h

y = M/(ρA)  

7 0
3 years ago
Shape of houses built in areas with hot climate and materials used<br>​
Brut [27]

Answer:

Cement and sand will do

Explanation:

because without it you can't build

5 0
2 years ago
Read 2 more answers
Other questions:
  • How to treat thyroid at home​
    9·2 answers
  • What is the velocity of the particle when its acceleration is zero?
    12·1 answer
  • At what point in its trajectory does a batted baseball have its minimum speed? If air resistance can be neglected, how does this
    8·1 answer
  • Which graph shows a negative acceleration
    10·1 answer
  • A spring has been compressed inside a toy what kind of energy is this
    10·1 answer
  • Consider a disk of radius 4.9 cm, having a uniformly distributed charge of +6.1 μC. The value of the Coulomb constant is 8.98755
    12·1 answer
  • Luster, hardness, color, size, and temperature are all examples of
    7·1 answer
  • How does mass affect acceleration during free fall?
    15·1 answer
  • What is the thermal energy least to greatest
    7·1 answer
  • IF YOUR GOOD AT SCIENCE THEN PLEASE ANSWER THIS ASAP I WILL MARK YOU THE BRAINLIEST
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!