Ask question

Ask question

All categories

2 years ago

13

Nuclear power plants require a lot of water to operate.

1 answer:

igomit [66]2 years ago

6 0

True because all power plants need a lot of water for cooling but most of them disclose how much they use.

You might be interested in

Write 2 laws of reflection of light

lutik1710 [3]

Answer:

<h2>Answer⤵</h2><h3><u>i</u><u>)</u><u>The first law of reflection states that the incident ray, the reflected ray, and the normal to the surface of the mirror, all lie in the same plane. </u></h3><h3><u>i</u><u>i</u><u>)</u><u>The second law of reflection states that the angle of reflection is equal to the angle of incidence. Both angles are measured with respect to the normal to the mirror.</u></h3>

6 0

1 year ago

1. A car accelerates from 32km/hr to 65 km/hr over 200m. What is the magnitude of the force acting on it? Assume the car has a m

Luden [163]

#1

As per kinematics we know that

$v_f^2 - v_i^2 = 2 a s$

here we know that

$v_f = 65 km/h = 18.1 m/s$

$v_i = 32 km/h = 8.9 m/s$

$s = 200 m$

now we will have

$18.1^2 - 8.9^2 = 2(a)(200)$

$a = 0.62 m/s^2$

Now by Newton's II law

$F = ma$

$F = 980 \times 0.62 = 608.6 N$

#2

part a)

Impulse = change in momentum

$I = m(v_f - v_i)$

given that

m = 0.153 kg

v = 25.7 m/s

now we have

$I = 0.153(25.7 - 0) = 3.93 kg m/s$

Part b)

As per Newton's II law we know that

$F = \frac{\Delta P}{\Delta t} = \frac{I}{\Delta t}$

as we know that

$\Delta t = 0.015 s$

$F = \frac{3.93}{0.015} = 262.14 N$

3 0

2 years ago

The sunlight reaches the ground through radiation

alexandr402 [8]

We know but What’s ur question?!!!

7 0

2 years ago

Read 2 more answers

True or false<br> two different notes can have the same fundamental frequency

Grace [21]

Answer:

true:)

Explanation:

3 0

2 years ago

You swing a bucket full of water in a vertical circle at the end of a rope. The mass of the bucket plus the water is 2.4 kg. The

sp2606 [1]

Answer:

122.5 N

Explanation:

The free body diagram in the bucket at the top of the circle is shown in the attached image.

The force balance hence, is

T + mg = mv²/r

where T = tension in the rope = ?

mg = weight of the bucket system

mv²/r = force keeping the bucket in circular motion.

v = velocity of the bucket = 7.8 m/s

r = radius of the circular path = 1.0 m

T + mg = mv²/r

T + (2.4×9.8) = (2.4×7.8²)/1

T = 146.016 - 23.52 = 122.496 N

7 0

2 years ago