Ask question

Ask question

All categories

3 years ago

11

a worker uses a board that is 7 m long to pry up a bolder A small rock is used for the fulcrum and is placed 2.5 m from the resi

stance end of the lever, calculate the ma of the board.

1 answer:

e-lub [12.9K]3 years ago

4 0

Answer:

en español por

favor para entender un poco más

You might be interested in

What is the momentum of a man of mass 10kg when he walks with a uniform velocity of 2m/s.

Stolb23 [73]

Answer:

$Momentum(p) = 20kgm/s$

Explanation:

Given

Mass = 10kg

Velocity = 2m/s

Required

Calculate the momentum of the man

Momentum is calculated as thus

$Momentum(p) = Mass(m) * Velocity(v)$

or

$p = mv$

So; to solve this question; we simply substitute 10kg for mass and 2m/s for velocity in the above formula;

The formula becomes

$Momentum(p) = 10kg * 2m/s$

$Momentum(p) = 10 * 2 * kg * m/s$

$Momentum(p) = 20kgm/s$

Hence, the momentum of the man is $20kgm/s$

5 0

3 years ago

A baseball has a mass of 0.145 kilograms, and a bowling ball has a mass of 6.8 kilograms. What is the gravitational force betwee

Olegator [25]

Quite low

Gravitation force = $\frac{6.67* 10^{-11}*0.145*6.8 }{ 0.5^{2} }$ = 26.3 * $10^{-11}$ = 2.63 * $10^{-10}$ N

6 0

3 years ago

Read 2 more answers

Which contains the particles that are vibrating fastest?

Phantasy [73]

Answer:

Boiling water

Explanation:

3 0

2 years ago

Which of the following elements is a metalloid?

Pavlova-9 [17]

Answer:

Germanium

Explanation:

Germanium is a chemical element that is grayish white metalliod

6 0

3 years ago

This was observed in 1997 what is it

Tems11 [23]

It is a comet that was a comet

5 0

3 years ago

Read 2 more answers