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GaryK [48]
4 years ago
10

A washing machine sits on the floor. How can you increase the force of friction on the washing machine without changing the surf

aces of the floor or washing machine? Explain your reasoning
Physics
1 answer:
Vladimir79 [104]4 years ago
3 0

Answer:

Push the washing machine harder onto the surface it sits upon, increasing friction between the two.

Explanation:

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A sled drops 50 meters in height on a hill. The mass of the rider and sled is 70 kg and the sled is going 10 m/s at the bottom o
navik [9.2K]

Answer:

Efficiency = 10.2 %

Explanation:

Given the following data;

Mass = 70 kg

Height = 50 m

Velocity = 10 m/s

We know that acceleration due to gravity is equal to 9.8 m/s².

To find the efficiency of energy conversion from potential to kinetic;

First of all, we would determine the potential energy;

P.E = mgh

P.E = 70 * 9.8 * 50

P.E = 34300 J

For the kinetic energy;

K.E = ½mv²

K.E = ½ * 70 * 10²

K.E = 35 * 100

K.E = 3500

Therefore, Input energy, I = 34300 J

Output energy, O = 3500 J

Next, we find the efficiency;

Efficiency = O/I * 100

Substituting into the formula, we have;

Efficiency = 3500/34300 * 100

Efficiency = 0.1020 * 100

Efficiency = 10.2 %

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3 years ago
A construction worker drives to his work 43 km away at an average speed of 62 km/h. Before he gets out of his car he realizes he
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Explanation:

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The table describes the properties of four compounds.
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Answer:

compounds C and D

Explanation:

I believe this is correct

8 0
3 years ago
Read 2 more answers
1) A tiger leaps horizontally from a 7.5 m high rock with a speed of 4.5 m/s. How far from
Artyom0805 [142]

The distance of tiger's leap from the base of rock is 5.58 m

It is a question of two dimensional motion

The time of motion in two dimensional motion is given by:

t= \sqrt{2y/g}

where y is the height and g is  the acceleration due to gravity

y is given to be 7.5m and let us assume g to be 9.8 m/s^2

t = \sqrt{2 * 7.5/9.8}

 = 1.24s

Using time and speed,

We know that distance is the product of speed and time,

Distance= speed x time

speed is given to be 4.5 m/s

distance from the base of rock = 4.5 x 1.24

                                                    = 5.58m

Hence the distance of tiger's leap from the base of rock is 5.58 m

Disclaimer:

The acceleration due to gravity is assumed to be 9.8 m/s^2

For further reference:

brainly.com/question/11213880?referrer=searchResults

#SPJ9

8 0
1 year ago
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