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3 years ago

When a trebuchet counterweight is hoisted by soldiers, what form of energy is

2 answers:

vladimir1956 [14]3 years ago

4 0

10. A safe place to use the trebuchet would be away from other buildings and people. A good example of a place would be a large field with no nearby structures.
14. Many factors need to be kept consistent throughout the experiment. One example of a variable that would need to be consistent is the weight and size of the projectile.
15. It is important to do many trials so that you can make sure that the results of each trial are nearly the same. If they are all vastly different, then it means that something has gone wrong.

Sorry I was only able to answer a few questions, but I hope these few answers help! :)

grin007 [14]3 years ago

4 0

4. What force must be overcome to lift the counterweight?

Weight and/or gravity.

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A ball thrown horizontally from an apartment balcony hits the ground in 5 seconds. If the horizontal velocity of the ball is dou

snow_tiger [21]

Since the horizontal velocity is what is doubled, that does not affect the fall of the ball, thus the fall is still 5 seconds long.

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3 years ago

If a weightlifter used 1,200 newtons of force to lift a barbell to a height of 2.5 meters in 3 seconds, how much work did he do?

Blizzard [7]

C.) Work done = Force x displacement = 1200 x 2.5 = 3000 J. Hope this helps!

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3 years ago

An organ pipe open at both ends has a radius of 4.0 cm and a length of 6.0 m. what is the frequency (in hz) of the third harmoni

Marysya12 [62]

When air is blown into the open pipe,

L = $\frac{nλ}{2}$

where nis any integral number 1,2,3,4 etc. and λ is the wavelength of the oscillation

⇒λ= $\frac{2L} {n}$

Note here that n=1 is for fundamental, n=2 is first harmonic and so on..

⇒ third harmonic will be n=4

Given L=6m, n=4, solving for λ we get:

λ= $\frac{(2)*(6)}{4}$ =3m

Relationship of frequency(f), velocity of sound (c) and wavelength(λ) is:

c=f.λ Or f= $\frac{c}{λ}$

⇒f= $\frac{344}{3}$

≈115 Hz

8 0

4 years ago

What happens to light when it strikes the inside surface of a smooth, curved mirror? It bounces in random directions. It bounces

kotykmax [81]

This is a concave mirror you're talking about, so all of the points are going to converge to a single focal point. Therefore the answer would be that it bounces back toward a single spot

5 0

3 years ago

Read 2 more answers

A resistor converts 350 J of electrical energy to other forms of energy. What is the amount of

Helga [31]

Answer:

50C

Explanation:

Given parameters:

Electrical energy = 350J

Potential difference = 7V

Unknown:

Amount of charge = ?

Solution:

To solve this problem, use the expression below;

E = q x v

E is the electrical energy

q is the quantity of charge

v is the voltage

Insert the parameters and solve for q;

350 = q x 7

q = $\frac{350}{7}$

q = 50C

5 0

3 years ago