PLEASE HELP I NEED AN ANSWER WITHIN 10 MINUTES (this is a 15 pt. question)Determine the mechanical energy of this object: a 1-kg ball sits on a 10-meter high cliff.

980 J

98 J

10 J

The ball isn't moving, so the mechanical energy is zero.

Answers

Answer 1

Answer: The answer to this question is 98 J

Answer 2

Answer: I think, 98 J is the answer.

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Convert to volume:
3.01 x 1023 molecules of SO2

Answers

Answer:11.19 L of SO2

Explanation:use the dimensional analysis chart and you multiply 3.01 times 10^ 23 by 22.4 then take that answer and divide by 6.022 times 10^ 23

Is Jacinth non silicate or silicate?

Answers

its i believe silicate

The volume of a gas at 99.0 kPa is 300.0 mL. If the pressure is increased to 188kPa, what will be the new volume?

Answers

Answer:

158.0 mL

Explanation:

We can solve this problem by using Boyle's law, which states that:

"For a fixed mass of a gas kept at constant temperature, the pressure of the gas is inversely proportional to its volume"

Mathematically:

$p\propto (1)/(V)$

where

p is the pressure of the gas

V is its volume

The equation can be rewritten as

$p_1 V_1 = p_2 V_2$

where in this problem:

$p_1=99.0 kPa$ is the initial pressure

$V_1=300.0 mL$ is the initial volume

$p_2=188 kPa$ is the final pressure

Solving for V2, we find the final volume:

$V_2=(p_1 V_1)/(p_2)=((99.0)(300.0))/(188)=158.0$ mL

How do u separate salt from rock salt?

Answers

In order to separate salt from rock salt, first crush the salt rock into small pieces, put it in a container and add water. Stir until it dissolves. Pour the solution to a funnel lined with coffee filter. Heat the filtered water and the water will evaporate leaving salt behind.

Which statement correctly describes the nucleus of the atom?

Answers

When atoms are considered most of the mass lies in the nucleus which has neutrons and protons. Hence the statement is true because on comparing weight of neutron and proton to the mass of electron, mass of electron will be negligible.

The mass {atomic} of any material is actually the mass we get on adding masses of proton and neutron. Electrons are about 104 kg are lighter than the mass of proton Neutron in the mass of proton and neutron and nearly equal to each other.

Answer:

An atomic nucleus contains most of the atom’s mass.

Explanation:

I took the assignment.

1. Which has more energy, an electron close to the nucleus of an atom, or an electron farther away from the nucleus?