Https://brainly.com/question/22600061 Don’t ask too much science

If we have less power, we most likely have (2 points)

iren2701 [21]

. the same amount of work being done over a shorter period of time.

4 0

3 years ago

Input Voltage = 220V

muminat

Answer:

Correct option is

A

450 V and 15 A

P

in

=I

p

V

p

⇒T

p

=

V

p

P

in

=

200N

3000W

=15A

Efficciencyofthetransformer

η=

P

in

P

out

=

V

p

I

p

V

s

I

s

⇒

100

90

=

3000

6V

s

V

s

=

100×6

90×5000

=450V

Hence,

option (A) is correct answer.

4 0

2 years ago

A car's acceleration is 3m/s2. If the car started at rest and it only took 10s for the car to reach this acceleration, what is t

Grace [21]

Answer:

30m/s

Explanation:

From law of motion equation

Vf= Vi + at

Where Vf= final velocity

Vi= initial velocity=0(the car started at rest)

a= acceleration= 3m/s2

t= time= 10s

Then substitute into the equation to get the final velocity.

Vf= 0+(10×3)

Vf= 30m/s

Hence, the car's final velocity is 30m/s

5 0

3 years ago

A tumble buggy travels on the ground for 8 seconds and travels 4 meters. What was its speed?

boyakko [2]

Answer:

32 mph

Explanation:

7 0

3 years ago

How many times higher could an astronaut jump on the Moon than on Earth if his takeoff speed is the same in both locations (grav

JulsSmile [24]

Answer:

maximum height on moon is 6 times more than the maximum height on Earth

Explanation:

Let the Astronaut has its maximum speed by which he can jump is "v"

now for the maximum height that it can jump is given as

$v_f^2 - v_i^2 = 2 aH$

now from above equation we will have

$0 - v^2 = 2(-g)H$

now we have

$H = \frac{v^2}{2g}$

now if Astronaut jump on the surface of moon with same speed

then we know that the acceleration of gravity on surface of moon is 1/6 times the gravity on earth

so at surface of moon we have

$0 - v^2 = 2(-g/6) H$

now we have

$H = \frac{6v^2}{2g}$

so maximum height on moon is 6 times more than the maximum height on Earth

8 0

3 years ago