PLS HELP WITH THIS FOR BRAINLIST IF ITS RIGHT

How can a small boy balance a big boy<br>on asea- saw ? Show with a diagram

liq [111]

Answ

— How can a small boy balance a big boy on a sea-saw? Show with a diagram. fast please...... Get the answers you need, now!

2 answers

Images for How can a small boy balance a big boy on seesaw ? Show with a diagram

Image result for How can a small boy balance a big boy on seesaw ? Show with a diagram

Explanation:

4 0

3 years ago

What is the initial speed of water if it rises to the height of 171m

Dmitry_Shevchenko [17]

58m/s

calculations below

4 0

3 years ago

Assuming that 50% of the initial kinetic energy of the bullet is converted into thermal energy in the bullet and the specific he

DedPeter [7]

Answer:

$\Delta T=\frac{v_{i}^{2}}{4c}$

Explanation:

Let the mass of bullet is m, initial velocity of bullet is vi and c be the specific heat of the bullet.

Kinetic energy, K = 1/2 mvi^2

According to the question, 50% of the kinetic energy is equal to the heat energy absorbed by the bullet.

50% of K = mass of bullet x specific heat x rise in temperature

1/4 mvi^2 = m x c x ΔT

$\Delta T=\frac{v_{i}^{2}}{4c}$

8 0

4 years ago

A student launches a small 0.5 kg rocket with an initial speed of 30 m/s at an angle of 60°. Approximately how much time will th

Elena L [17]

Answer:

$t=5.30s$

Explanation:

The high reached by a proyectile in an uniformly accelerated motion is given by:

$y=v_{0y}t-\frac{gt^2}{2}$

The time that the rocket spends in the air is obtained for y = 0, since this is the time that the rocket travels before touching the ground. Recall that $v_{0y}=v_0sin\theta$ . Solving for t:

$0=(v_0sin\theta) t-\frac{gt^2}{2}\\\frac{gt}{2}=v_0sin\theta\\t=\frac{2v_0sin\theta}{g}\\t=\frac{2(30\frac{m}{s})sin(60^\circ)}{9.8\frac{m}{s^2}}\\t=5.30s$

5 0

4 years ago

Which of the following describes the bending of light due to a change in its speed?

Artyom0805 [142]

I think the answer is reflection but I might be wrong

3 0

3 years ago

Read 2 more answers