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Ann [662]
3 years ago
5

The first five questions refer to the following problem:

Physics
1 answer:
Kruka [31]3 years ago
8 0

Answer:

<h2>Δd=d2−d1</h2>

Explanation:

<h2>good morning</h2>
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A machine gun with a mass of 5kg fires a 50g bullet at a speed of 100m/s calculate the recoil speed of the machine gun
Alenkinab [10]

Answer:

Explanation:

Convert mass of bullet 50g in kg

✯ Divide 50 by 1000

⟹ 50/1000

∴ 0.05 kg

3 0
3 years ago
A chemical is always the same thing as an element .<br><br> True <br> False
olya-2409 [2.1K]
That would be false

Hope this helps :)
3 0
3 years ago
Read 2 more answers
Seema knows the mass of basketball. What other information is needed to find the balls potential energy
Lelu [443]

Answer: The height (position) of the ball and the acceleration due gravity

Explanation:

In this case we are taking about gravitational potential energy, which is the energy a body or object possesses, due to its position in a gravitational field.  In this sense, this energy depends on the relative height of an object with respect to some point of reference and associated with the gravitational force.  

In the case of the Earth, in which the gravitational field is considered constant, the gravitational potential energy U will be:  

U=mgh  

Where:

m is the mass of the ball

g=9.8 m/s^{2} is the acceleration due gravity (assuming the ball is on the Earth surface)

h is the height (position) of the ball respect to a given point

Note the value of the gravitational potential energy is directly proportional to the height.

8 0
4 years ago
Read 2 more answers
What is the frequency of a wave traveling at 300,000,000 m/s with a wavelength of .0025 m/cycle? Please help me !!
Lelu [443]

Answer:

its 00.0035474

Explanation:

..... .. . . .. . . . . .. .

8 0
4 years ago
The speed of an object is given by v = 5.00t^2 + 4.00t where v is in m/s and t is in s. What is the acceleration of the object a
nexus9112 [7]
The speed is 
v = 5t² + 4t
where 
v is in m/s, and t in s.

The acceleration is the derivative of the velocity. It is
a = 10t + 4

When t = 2 s, the acceleration is
a(2) = 10*2 +4 = 24 m/s²

Answer: 24 m/s²
8 0
3 years ago
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