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3 years ago

Which statements accurately describes the waste generated by nuclear reactions ? check all that apply.

Physics

1 answer:

Neko [114]3 years ago

4 0

A) its 's hazardous for hundreds to thousand of year B) Some waste can be recycled and used again is the answer

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To prevent accidental electric shock, most electrical equipment is A. painted. B. isolated. C. coated. D. grounded.

Nesterboy [21]

D. It is Grounded below ground

4 0

3 years ago

Read 2 more answers

Calculate the kinetic energy of a 20-kg sled moving 28.0 m/s. Show your work in the space to the right.

suter [353]

Answer:

7840

Explanation:

K.e=1/2mv^2

=1/2(20)(28.0)^2

=7840J

5 0

3 years ago

Water from a vertical pipe emerges as a 10-cm-diameter cylinder and falls straight down 7.5 m into a bucket. The water exits the

cupoosta [38]

The diameter of the column of the water as it hits the bucket is 4.04 cm

The equation of continuity occurs in the fluid system and it asserts that the inflow and the outflow of the volume rate at the inlet and at the outlet of the system are equal.

By using the kinematics equation to determine the speed of the water in the bucket and applying the equation of continuity to estimate the diameter of the column, we have the following;

Using the kinematics equation:

$\mathbf{v_f ^2 = v_i^2 + 2gh}$

$\mathbf{v_f ^2 =(2.0)^2 + 2\times 9.8 \times 7.5}$

$\mathbf{v_f ^2 =151 m/s}$

$\mathbf{v_f =\sqrt{151 m/s}}$

$\mathbf{v_f =12.29 \ m/s}$

From the equation of continuity:

$\mathbf{A_iV_i = A_fV_f}$

$\mathbf{\pi r^2_iV_i = \pi r^2_fV_f}$

$\mathbf{ r^2_iV_i = r^2_fV_f}$

$\mathbf{ (\dfrac{10}{2})^2\times 2.0 = r_f^2 \times 12.29}$

$\mathbf{ 50 = 12.29 \times r_f^2}$

$\mathbf{ r_f= \sqrt{\dfrac{50}{12.29} }}$

$\mathbf{ V_f= 2.02 \ cm }$

Since diameter = 2r;

∴

The diameter of the column of the water is:

= 2(2.02) cm

= 4.04 cm

Learn more about the equation of continuity here:

brainly.com/question/10822213

6 0

3 years ago

Four waves are described by the following equations, where distances are measured in meters and times in seconds. I. y = 0.12 co

marishachu [46]

Answer:

Wave 1 and Wave 2.

Explanation:

We know that the general equation of a wave is given by :

$y=A\ sin(kx-\omega t)$

$y=A\ cos(kx-\omega t)$

We know that the speed of a wave is given by :

$v=\dfrac{\omega}{k}$

Where

$\omega$ = angular speed

k = propagation constant

Wave 1.

$y=0.12\ cos(3x-21t)$

$v_1=\dfrac{21}{3}=7\ m/s$

Wave 2.

$y=0.15\ cos(6x+42t)$

$v_2=\dfrac{42}{6}=7\ m/s$

Wave 3.

$y=0.13\ cos(6x+21t)$

$v_3=\dfrac{21}{6}=3.5\ m/s$

Wave 4.

$y=-0.23\ cos(3x-42t)$

$v_1=\dfrac{42}{3}=14\ m/s$

It is clear that wave 1 and 2 have the same speed i.e. 7 m/s. Hence, this is the required solution.

5 0

4 years ago

Which of the following is true of machines?

xz_007 [3.2K]

The right answer for the question that is being asked and shown above is that: "A. Machines increase the amount of force required to do a task. " The statement that is true about machines is that <span>A. Machines increase the amount of force required to do a task. </span>

6 0

3 years ago