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Marat540 [252]
2 years ago
13

(Please help 25 points)

Physics
1 answer:
Maksim231197 [3]2 years ago
3 0

The potential energy (P.E) of X at r is less than P.E at s.

The total energy (T.E) of Y is less than total energy (T.E) of X.

The PE of Y at v is greater than the PE of Z at c.

The speed of Y at i is .greater than that at v.

The kinetic energy (KE) of z at u is less than that at n.

The PE of Y at s is less than the PE of X at c.

The PE of X at c is less than the PE of Z at c.

The PE of X at c is less than the PE of Z at c.

<h3>PE of X at r  and at s</h3>

The potential energy (P.E) of X at r is less than P.E at s due to greater displacement at s.

<h3>TE of Y is .... the TE of X</h3>

The total energy (T.E) of Y is less than total energy (T.E) of X because X has greater displacement from the planet.

<h3>PE of Y at v is .... the PE of Z at c</h3>

The PE of Y at v is greater than the PE of Z at c due to greater displacement at v.

<h3>Speed of Y at i is .... that at u</h3>

The speed of Y at i is .greater than that at v because i is closer to the planet than v.

<h3>KE of Z at u is .... that at n</h3>

The kinetic energy (KE) of z at u is less than that at n because n is closer to the planet and will have greater velocity.

<h3> PE of Y at s is .... the PE of X at c</h3>

The PE of Y at s is less than the PE of X at c, because position c has greater displacement.

<h3>The TE of Z is .... the TE of X</h3>

The TE of Z is greater than the TE of X due to greater displacement of Z from the planet.

<h3>The PE of X at c is .... the PE of Z at c</h3>

The PE of X at c is less than the PE of Z at c due to greater displacement of Z from c.

Learn more about potential energy here: brainly.com/question/1242059

#SPJ1

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an empty bottle has a mass of 24,25 grams and 86,55 grams completely full-filled with water. Then, water in the bottle is emptie
ladessa [460]
The density of a substance is the quotient we obtain when we divide its mass by the volume. The density is,
                          density = mass / volume
The mass of carbon tetrachloride is given to be 123.95 grams and that the volume is obtained by subtracting final weight of the completely full-filled with water bottle with the initial weight.
                              86.55 - 24.25 = 62.3 grams
Since the density of water is 1 grams/ cc. Then, the volume of the bottle is also 62.3 cc. The density is therefore,
                       density = 123.95 grams/ 62.3 cc = 1.99 g/cc
4 0
3 years ago
The farther a star is away from earth, the more it is
Darya [45]
The more it is Red shifted.
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A slender rod is 80.0 cm long and has mass 0.390 kg . A small 0.0200-kg sphere is welded to one end of the rod, and a small 0.05
Lilit [14]

Answer:

v = 1.08 m/s

Explanation:

What is the linear speed of the 0.0500-kg sphere as its passes through its lowest point?

The decrease in PE is

d = 80.0cm * 1 / 1000m = 0.80m

h = 0.80 m /2 = 0.40 m

ΔPE = m*g*h

ΔPE = (0.0500 - 0.0200)kg * 9.8m/s² * 0.400 m

ΔPE = 0.1176 J

The moment of inertia of the assembly is

I = 1/12*m*L² + (m1 + m2)*(L/2)²

I = 1/12*0.390kg*(0.800m)² + 0.0700kg*(0.400m)²

I = 0.032 kg·m²

KE = ½Iω²

0.1176 J = ½ * 0.032kg·m² * ω²

ω = 2.71 rad/s

v = ωr = 2.71 rad/s * 0.400m

The linear velocity

v = 1.08 m/s

3 0
3 years ago
The driver of a car moving at 15/ along a straight level road applies the brakes. The car decelerates at a steady rate of 3/2.
aleksley [76]

The question involves the knowledge of kinematics and dynamics. The answers are;

a) Time taken to stop the car = 10 s

b) The operation that slows the car is Friction

c)  The size of the force =  1200 N

<h3>What is Deceleration ?</h3>

Deceleration is the opposite of acceleration. When an object is going to rest, it will be decelerating and the final velocity will be equal to zero.

Given that the driver of a car moving at 15 m/s along a straight level road applies the brakes. The car decelerates at a steady rate of 3/2 m/s²

a) How long does the car take to stop can be found by using the formula

v = u - at

Where

  • v = 0
  • u = 15 m/s
  • a = 3/2 m/s² = 1.5 m/s²
  • t = ?

Substitute all the parameters into the formula

0 = 15 - 1.5t

1.5t = 15

t = 15/1.5

t = 10 s

b) The description of the operation that slows the car down after the brake pedal is pressed is simply friction.

c) If the mass of the car is 800. The size of the force slowing the car down will be F = ma

F = 800 × 1.5

F = 1200 N

Therefore, the time taken to stop the car is 10 s and the force slowing the car down is 1200 N

Learn more about Acceleration here: brainly.com/question/605631

#SPJ1

7 0
1 year ago
The electric potential difference between the ground and a cloud in a particular thunderstorm is 2.5 × 109 V. What is the magnit
muminat

Answer:

U = - 4 x 10^{-10}

Explanation:

ΔV = potential difference = 2.5 * 10^9 Volts

q = charge on electron = -1.6 * 10^{-19} C

electric potential energy is given as

U = q ΔV = ( -1.6 * 10^{-19}  ) ( 2.5 * 10^9  )

               = - 4 x 10^{-10}

6 0
3 years ago
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