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3 years ago

A dog runs after a car. The car is travelling at an average speed of 5 m/s.

Physics

2 answers:

n200080 [17]3 years ago

3 0

Answer:

<h2>The answer is 4 s</h2>

Explanation:

The time taken can be found by using the formula

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

where

d is the distance

v is the velocity

From the question we have

$t = \frac{20}{5} \\$

We have the final answer as

Hope this helps you

Lina20 [59]3 years ago

3 0

Answer:

4 secs

Explanation:

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Which of the following statements is falsifiable?

dimulka [17.4K]

We have that the <em>statements</em> found falsifiable is

Henry Ford invented the first automobile.

Option A

<h3>Henry Ford</h3><h3 />

Generally in as much Ford motor is a great vehicle company

He did not create the first automobile

Credit is give to Karl Benz for The first auto-mobile

Therefore

The statements found falsifiable is

Henry Ford invented the first automobile.

Option A

For more information on Benz visit

brainly.com/question/19424882

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3 years ago

A 1500-nF capacitor with circular parallel plates 2.0 cm in diameter is accumulating charge at the rate of 40.0 mC/s at some ins

Delvig [45]

Answer:

$B= 1.14 X 10^{-7} Tesla$

Explanation:

B at point 7.0 cm radially outward is to find out?

Now for field strength in case of parallel plates in given as

$B=\frac{I\mu}{2r\pi}$

$B=\frac{4\pi X 10^{-7} \frac{Tm}{A}X40 X10^{-3} \frac{C}{s}}{2X0.07mX\pi}$

$B= 1.14 X 10^{-7} Tesla$

For the second part as Capacitor is fully charged no more flow of current could take place hence

I= Current =o

so B = 0

6 0

3 years ago

The ability to distinguish between acceleration and velocity will be critical to your understanding of many other concepts in th

Sauron [17]

Answer:

Object could only be moving with increasing speed.

Explanation:

Let us consider the general formula of acceleration:

a = (Vf - Vi)/t

Vf = Vi + at -------- equation 1

where,

Vf = Final Velocity

Vi = Initial Velocity

a = acceleration

t = time

<u>FOR POSITIVE ACCELERATION:</u>

Vf = Vi + at

since, both acceleration and time are positive quantities. Hence, it means that the final velocity of the object shall be greater than the initial velocity of the object.

Vf > Vi

It clearly shows that if an object moves with positive acceleration. <u>It could only be moving with increasing speed.</u>

Solving the same equation for negative acceleration shows that the final velocity will be less than initial velocity and object will be moving with decreasing speed.

And for the constant velocity final and initial velocities are equal and thus, acceleration will be zero.

7 0

3 years ago

The inclined plane in the figure above has two sections of equal length and different roughness. The dashed line shows where sec

saveliy_v [14]

The static friction exerted on the block by the incline is $\mu _ s _1 Mgcos \ \theta$ .