2 years ago

What kind of situation can you think would be a benefit of reducing friction?

1 answer:

8 0

Answer:

Wear and tear of an object is not desirable as it reduces its life. This is more so in case of moving parts in automobiles and machinery. Therefore, efforts are made to reduce friction between moving parts. Friction between moving parts is usually reduced by introducing a substance between the moving surfaces.

Explanation:

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A groups beliefs, values, and patterns of behavior as known as its

Nady [450]

I believe the answer is Nonmaterial Culture.

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2 years ago

Which of the following renaissance scientists made improvements to the telescope?

LenaWriter [7]

Michelaneglo DDDDDDDDDDDDDDDDDDDDDDDDD

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3 years ago

A train travels with a constant speed of 28 miles per hour. How long will it take to travel a distance of 112 miles? Show your c

AVprozaik [17]

Answer:

4 hours

Explanation:

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2 years ago

A rechargeable battery is capable of delivering a current of 0.25 A for 1800 s at a potential difference of 1.5 V.

avanturin [10]

Answer:

a. q=450 c

b. E=675 J

Explanation:

Direct Current (DC)

It's the flow of electric charges in one direction driven by a constant voltage circuit. The intensity of the current flow is computed as

$\displaystyle I=\frac{q}{t}$

Where q is the constant flow of charge in time t

The energy of an element providing Voltage V, current I during a time t is

$E=V.I.t$

a. The charge can be computed by solving the first equation for q

$q=I.t=0.25\ A.\ 1800\ s=450\ c$

b. The energy transferred by the battery is

$E=(1.5).(0.25).(1800)=675\ J$

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2 years ago

Abby throws a ball straight up and times it. she sees that the ball goes by the top of a flagpole after 0.50 s and reaches the l

Arisa [49]

The time it takes for a ball to complete the trip is given to be 4.10 s. This implies that the trip going up of the ball is equal to 2.05 s. Using this time to determine the initial speed, we have,
Vf = Vo - gt
Vf is the final speed which is equal to 0 on the topmost location of the ball.
0 = Vo - (9.8 m/s²)(2.05 s)
Vo = 20.09 m/s

At 0.5 s,
Vf = 20.09 m/s - (9.8 m/s²)(0.5 s)
Vf = 15.19 m/s

Thus, the speed of the ball when the height is in level with the top of the flagpole is 15.19 m/s.

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3 years ago