1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
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

You might be interested in
The reacting force that is equal to and opposite in the direction to the centripetal force and tends to fling air out of the cen
BARSIC [14]

Answer:

Centrifugal force

Explanation:

The reacting force that is equal to and opposite in the direction to the centripetal force and tends to fling air out of the center of rotation of High and Low pressure systems is called centrifugal force.

Centrifugal force is force that causes an object moving in a circular path to move out and away from the center of it's path, it always centripetal force and the force is imaginary, which can only be felt and not seen.

7 0
3 years ago
Small-plane pilots regularly compete in "message drop" competitions, dropping heavy weights (for which air resistance can be ign
iren [92.7K]

plane is flying at an altitude of 70 m

now if an object is dropped from it then time taken by object to drop on ground will be given as

y = v_i* t + \frac{1}{2}at^2

here initial speed in vertical direction must be zero as plane is moving horizontal

given that

y = 70 m

a = 9.8 m/s^2

70 = 0 + \frac{1}{2}*9.8*t^2

t = 3.77 s

now since the plane is moving horizontally with speed v = 44 m/s

so the horizontal distance moved by the object will be

d = v_x * t

d = 44 * 3.77

d = 166.3 m

so the distance moved by the box is 166.3 m

3 0
3 years ago
Read 2 more answers
Ag,Au and Cu are called coinage metals why plzzzz hurry its urgent plzzz​
Ronch [10]

Answer:

This is because these metals are used for minting (making) coins.

8 0
3 years ago
Flapping flight is very energy intensive. A wind tunnel test
steposvetlana [31]

Answer:

The metabolic power for starting flight=134.8W/kg

Explanation:

We are given that

Mass of starling, m=89 g=89/1000=0.089 kg

1 kg=1000 g

Power, P=12 W

Speed, v=11 m/s

We have to find the metabolic power for starting flight.

We know that

Metabolic power for starting flight=\frac{P}{m}

Using the formula

Metabolic power for starting flight=\frac{12}{0.089}

Metabolic power for starting flight=134.8W/kg

Hence, the metabolic power for starting flight=134.8W/kg

4 0
3 years ago
A small, positively charged ball is moved close to a large, positively charged ball. which describes how the small ball likely r
NNADVOKAT [17]

Answer;

-it will move away from the large ball because like charges repel.

Explanation;

-Electric force is the force that pushes apart two like charges, or that pulls together two unlike charges. The basic law of electrostatics Like charges of electricity repel each other, whereas unlike charges attract each other.

When small, positively charged ball is moved close to a large, positively charged ball it would be pushed away from the large positively charged ball since they are both positively charged. One has to put in energy to try to move the small ball closer to the large ball. The closer one try to move it to the large ball, the more energy one has to put in, so the more electrical potential energy the small ball would have.

6 0
3 years ago
Read 2 more answers
Other questions:
  • Which statement correctly describes the differences between positive and negative acceleration? Positive acceleration describes
    13·2 answers
  • Showing how a projectile motion is parabolic​
    13·1 answer
  • WILL GIVE BRAINLIEST! THANK YOU :)
    5·1 answer
  • NEEEEEEEEEEEEEEEEEEEEEEEEEEED !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    9·2 answers
  • Can EM waves pass through solid objects
    12·2 answers
  • The car has a mass of 22,000Kg. Calculate the force needed to stop the car.
    7·1 answer
  • A boy pushes his baby sister in a stroller that has a mass of 45,000 g. What is the acceleration on the stroller if the force is
    7·1 answer
  • Write down the principals of them lever in points .​
    12·1 answer
  • 1. Why do certain elements have isotopes?
    7·1 answer
  • A soccer player runs 75m in a straight line down a soccer field in 11 seconds. What
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!