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2 years ago

5

How do the charges compare when two objects are charged through friction

1 answer:

Leona [35]2 years ago

7 0

<span>The objects become oppositely charged and have equal amounts of charge. </span>

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Please answer this fast

Natali5045456 [20]

the answer choice will be A because they travel at the same speed through only light not one material.

3 0

2 years ago

Read 2 more answers

The voltage ???? in a simple electrical circuit is slowly decreasing as the battery wears out. The resistance ???? is slowly inc

zimovet [89]

Answer:

The change in current at $R =456 \Omega$ is $\frac{dI}{dt} = 7.032 * 10^{-5} A/s$

Explanation:

From the question we are told that

The resistance is $R = 465 \Omega$

The current is $I = 0.09A$

The change in voltage with respect to time is $\frac{dV}{dt} = - 0.03 V/s$

The change in resistance with time is $\frac{dR}{dt} = 0.03 \Omega /s$

According to ohm's law

$V = IR$

differentiating with respect to time using chain rule

$\frac{dV}{dt} = I \frac{dR}{dt} + R * \frac{dI}{dt}$

substituting value at R = 456

$-0.0327 = 0.09 * 0.03 + 456* \frac{dI}{dt}$

$\frac{dI}{dt} = 7.032 * 10^{-5} A/s$

6 0

2 years ago

the weight of 80 kg of mass on mercury is 296 N and almost identical to the weight of the same mass on Mars but mercury has much

Dmitrij [34]

Where Gravity rely's on only mass and distance and nothing else, so the weight on the planets will vary like you have stated. However Mars is smaller than Mercury, so the weight on Mars will be less, and the weight on Mercury will be more. Think this way.

More Mass = More Gravity = More Weight

Less Mass = Less Gravity = Less Weight

3 0

2 years ago

A bicycle traveled 150 meters west from point A to point B. Then It took the same route and came back to point A. It took a tota

Julli [10]

Answer:

Option D. The average speed is 2.5 meters/second, and the average velocity is 0 meters/second.

Explanation:

we know that

To find out the average speed divide the total distance by the total time

Let

d -----> the total distance in meters

t -----> the time in seconds

s ----> the speed in meters per second

$s=\frac{d}{t}$

Remember that

$1\ min=60\ sec$

we have

$t=2\ min=2(60)=120\ sec$

$d=150(2)=300\ m$

substitute

$s=\frac{300}{120}$

$s=2.5\frac{m}{sec}$

<u><em>Find out the average velocity</em></u>

To find out the average velocity divide the displacement) by the time

The displacement is the distance from the start point to the end point regardless of the route

In this problem

The start point is A and the end point is A

so

The displacement is equal to zero

therefore

The average velocity is 0 m/sec

6 0

2 years ago

An Object is moving due south at 16 m/s, when a force accelerates it at 4m/s in a southerly direction. How long will it take for

N76 [4]

Answer:

Time taken to accelerate to 48 m/s = 8 seconds

Explanation:

Initially the object is moving south at = $16 m/s$

So, initial velocity of the object = $16 m/s$

Acceleration caused by the force = 4 $m/s^2$

Final velocity towards south = $48 m/s$

Using equation of motions:

$v_f=v_i+at$

where

$v_f\rightarrow$ final velocity

$v_i\rightarrow$ initial velocity

$a\rightarrow$ acceleration

$t\rightarrow$ time

Plugging in values.

$48=16+(4)t$

$48=16+4t$

Subtracting both sides by 16

$48-16=16+4t-16$

$32=4t$

Dividing both side by 4.

$\frac{32}{4}=\frac{4t}{4}$

$8=t$

∴ $t=8$

Time taken to accelerate to 48 m/s = 8 seconds

6 0

2 years ago