Please help its URGENT!!

Physics

2 answers:

Zolol [24]3 years ago

7 0

Answer:

Jupiter - Giant red spot

Mars - Most habitable other than earth

Mercury - Smallest terrestrial planet

Pluto - Is a Kuiper belt object

Saturn - Most visible rings

Greeley [361]3 years ago

6 0

Answer:

1 D ,2 B ,5 C ,3 A ,4 E i dont know why you gotta have 20 words to answer it but yeah

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The air in a room has a mass of 50kg and a specific heat of 1,000 J/(kg.C). What is the change in the thermal energy of the air

dem82 [27]

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4 years ago

Jason has 13720 J of gravitational potential energy standing at the top of a cliff over the lake. If he jumps off the cliff and

Anna [14]

The conservation of energy and Newton's second law allows us to find the results about Jason's falling motion are;

The energy when reaching the water is K = 13720 J

The average force of the water to stop it is: F = 2744 N

<h3>Energy conservation.</h3><h3> </h3>

The conservation of energy is one of the most important principles of physics, stable that if there is no friction force, mechanical energy is conserved at all points.

Mechanical energy is the sum of kinetic energy plus potential energy.

Let's look for the energy at two points

Starting point. Get higher.

Em₀ = U = 13720 J

Final point. Lower down.

$Em_f$ = K

Friction in the air is negligible, so energy is conserved.

$Em_o= Em_f$

K = 13720J

<h3>Kinematics and Newton's law.</h3><h3> </h3>

They indicate that it stops 5m under the water, if we assume that the water acts with a constant force, we can use kinematics and Newton's second law to find this force.

The kinematics expression to find the acceleration is

v² =v₀² – 2ay

When it stops the speed is zero.

$a = \frac{v_o^2}{2y}$