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Over [174]
3 years ago
6

PLZZZZZZ HELP 30 POINTS!!!!!!

Physics
1 answer:
Triss [41]3 years ago
6 0
Energy is not exchanged and is a variable, i believe
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A water-skier is being pulled by a tow rope attached to a boat. As the driver pushes the throttle forward, the skier accelerates
Novosadov [1.4K]

Answer:

4334.4 J

Explanation:

Work done equals to kinetic energy change

KE=½mv²

Change in KE is given by

∆KE=½m(v²-u²)

Where m is mass of water-skier, KE is kinetic energy, ∆KE is the change in kinetic energy, v is final velocity and u is initial velocity.

Substituting 72 kg for m, 12.1 m/s for v and 5.10 m/s for u then

∆KE=½*72(12.1²-5.10²)=4334.4J

Therefore, the work done by the net external force acting on the skier is equal to 4334.4 J

6 0
3 years ago
At what temperature is Fahrenheit scale reading equal to twice of celsius?
gayaneshka [121]
At -24.613 F<span> temperature is the Fahrenheit scale reading equal to twice that of the Celsius and at </span>160 F<span> temperatuar is the Fahrenheit scale reading equal to half that of the Celsius? So, 160 degrees Celsius will equal 320 degrees Fahrenheit.</span>
5 0
3 years ago
Which change will always result in an increase in gravitational force between two objects
grin007 [14]
Increasing the masses of the objects and decreasing the distance between the objects
7 0
4 years ago
Read 2 more answers
Shinra wants to find and save his younger brother Sho. In order to do this
Debora [2.8K]

Answer:

My answer is 250m/sec

Explanation:

the formula is clearly

Speed = <u>Distance</u>

Time

Speed = <u>5</u><u>0</u><u>0</u><u>m</u><u>e</u><u>t</u><u>e</u><u>r</u><u>s</u><u> </u> (Divide the two)

2seconds

Speed = 250m/sec

4 0
3 years ago
Read 2 more answers
2. Can you place three forces of 5g, 6g, and 12g so they are in equilibrium. Justify your answer.
Bond [772]

Answer:

We cannot place three forces of 5g, 6g, and 12g in equilibrium.

Explanation:

Equilibrium means their sum must be zero.

Here the forces are 5g, 6g, and 12g.

For number of forces to be in equilibrium the magnitude of largest vector should be less than sum of the magnitude of other vectors.

Here

        Magnitude of largest force = 12 g

        Sum of magnitudes of other forces = 5g + 6g = 11g

       Magnitude of largest force >   Sum of magnitudes of other forces

So this forces cannot form equilibrium.

We cannot place three forces of 5g, 6g, and 12g in equilibrium.

4 0
3 years ago
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