Ask question

Ask question

All categories

4 years ago

15

What is the formula for potential energy ?

1 answer:

crimeas [40]4 years ago

6 0

PE = mass * gravity * height

You might be interested in

The average kinetic energy of the atoms that make up a substance which is changing from a liquid to a solid is _____________.

inysia [295]

The average kinetic energy of the atoms that make up a substance which is changing from a liquid to a solid is <span>decreasing. The answer is letter A. This is because there is more room for movement of atoms if the pahse is in liquid than in solid.</span>

4 0

3 years ago

A 5kg cart moving to the right with a velocity of 16 m/s collides with a concrete wall and

Kryger [21]

Explanation:

mass, m = 5kg

initial velocity, u = 16m/s

final velocuty, v = -22m/s

change in momentum, ∆p = ?

∆p = m (v-u)

5(-22-16)

5(38)

∆p = 190kgm/s

check the calculations!

8 0

3 years ago

Find the density of a substance that has a volume of 754 cm3 and a mass of 7,917 grams. Don't forget your units!

Anit [1.1K]

Answer:

$\boxed{\sf Density \ of \ the \ substance = 10.5 \ g/cm^3}$

Given:

Mass (M) = 7917 grams

Volume (V)= 754 cm³

To Find:

Density of the substance

Explanation:

$\boxed{ \bold{\sf Density \ (\rho) = \frac{Mass \: (M)}{Volume \: (V)}}}$

Substituting values of M & V in the equation:

$\sf \implies \rho = \frac{7917}{754}$

$\sf \implies \rho = 10.5 \: g/ {cm}^{3}$

3 0

4 years ago

Anna Litical is practicing a centripetal force demonstration at home. She fills a bucket with water, ties it to a strong rope, a

dlinn [17]

Answer:

Explanation:

Suppose when bucket is half full it has a mass of 2 m rotating in a circle of radius r

When Bucket is quarter full then it has a mass of m rotating in a circle of radius r.

When an object moves in a circular path then it experiences an inward force which is given by

$F_1=\frac{2mv^2}{r}$

where v=velocity of bucket

Force in case 2 is given by

$F_2=\frac{mv^2}{r}$

Thus $F_1=2F_2$

therefore force required in half bucket is more than force required in quarter bucket full.

6 0

4 years ago

Classify each model A-D as either an element, a compound, or a mixture. Explain your reasoning for each answer

ANEK [815]

Answer:

a

Explanation:

8 0

2 years ago