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fgiga [73]
2 years ago
14

The mass of the skier, including his equipment, is 75kg. In the ski race, the total vertical

Physics
1 answer:
diamong [38]2 years ago
3 0

The gravitational potential energy

gpe = mgh

\tt gpe=75\times 9.8\times880=646,800~J

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A planet exerts a gravitational force of magnitude 9e22 N on a star. If the planet were 2 times closer to the star (that is, if
Dmitrij [34]

To solve this problem we will use the related concepts in Newtonian laws that describe the force of gravitational attraction. We will use the given value and then we will obtain the proportion of the new force depending on the Radius. From there we will observe how much the force of attraction increases in the new distance.

Planet gravitational force

F_p = 6*10^{22}N

F_p = \frac{GMm}{R^2}

F_p = 9*10^{22}N

Distance between planet and star

r = \frac{R}{2}

Gravitational force is

F = \frac{GMm}{r^2}

Applying the new distance,

F = \frac{GMm}{(\frac{R}{2})^2}

F =  4\frac{GMm}{R^2}

Replacing with the previous force,

F = 4F_p

Replacing our values

F= 4(9*10^{22}N)

F = 36*10^{22}N

Therefore the magnitude of the force on the star due to the planet is  36*10^{22}N

5 0
3 years ago
Where is visible light found on the electromagnetic spectrum?
vampirchik [111]

Answer:

C: in between infrared and ultraviolet light

Explanation:

the colors are

V - violet

I - indigo

B - blue

G - green

Y - yellow

O - orange

R - red

5 0
3 years ago
A 50kg person standing still in ice skates throws their helmet to the right at 25 m/s while on a frictionless surface. This give
labwork [276]

Answer:

2.0 kg

Explanation:

5 0
3 years ago
What would happen if one of the four-stroke combustion cycle parts never worked?​
Sergeu [11.5K]

Answer:

An internal-combustion engine goes through four strokes: intake, compression, combustion (power), and exhaust. As the piston moves during each stroke, it turns the crankshaft.

3 0
3 years ago
Read 2 more answers
A ski tow operates on a slope of angle 15.6 ∘ of length 340 m . The rope moves at a speed of 12.7 km/h and provides power for 53
GREYUIT [131]

Answer:

P = 34034.2 Watt

Explanation:

As we know that the slope angle is given as

\theta = 15.6^0

now the weight of the rider along the slope is given as

W = mgsin\theta

W = 69(9.81)sin15.6

W = 182 N

now total weight of all 53 riders along the slope is given as

F = 53 W

F = 9647.5 N

now the speed of the rope is given as

v = 12.7 km/h = 3.53 m/s

now the power required is given as

P = F.v

P = 9647.5(3.53)

P = 34034.2 Watt

3 0
2 years ago
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