All categories

3 years ago

How does it do? this photo

Physics

2 answers:

Xelga [282]3 years ago

6 0

The answer is A , because I had the same question .

vova2212 [387]3 years ago

5 0

Answer: Its A because i had the same question and it was a

You might be interested in

If a 370 KG missile is flying at a speed of 220 m/s , then what is it’s kinetic energy

lidiya [134]

Answer:

8954000 J

Explanation:

The formula to find kinetic energy is:

Kinetic energy = $\frac{1}{2}$ × mass × (velocity)²

So, Kinetic energy = $\frac{1}{2}$ × 370 × (220)²

Kinetic energy = 8954000 J

4 0

2 years ago

When does resonance occur?

bija089 [108]

Resonance occurs when the amplitude of an object's oscillations are increased by the matching vibrations of another object.

Source: Resonance: Definition & Transmission of Waves

4 0

4 years ago

Read 2 more answers

g A spherical container of inner diameter 0.9 meters contains nuclear waste that generates heat at the rate of 872 W/m3. Estimat

zhannawk [14.2K]

Answer: The total rate of heat transfer from the container to its surroundings ignoring radiation is 332.67 W.

Explanation:

Given: Inner diameter = 0.9 m

q = 872 $W/m^{3}$

Now, radii is calculated as follows.

$r = \frac{diameter}{2}\\= \frac{0.9}{2}\\= 0.45 m$

Hence, the rate of heat transfer is as follows.

$Q = q \times V$

where,

V = volume of sphere = $\frac{4}{3} \pi r^{3}$

Substitute the values into above formula as follows.

$Q = q \times \frac{4}{3} \pi r^{3}\\= 872 W/m^{3} \times \frac{4}{3} \times 3.14 \times (0.45 m)^{3}\\= 332.67 W$

Thus, we can conclude that the total rate of heat transfer from the container to its surroundings ignoring radiation is 332.67 W.

3 0

3 years ago

What is the difference in light that is refracted compared to light that is reflected? Think in terms of speed of light as well

Ber [7]

Answer:

The refracted light wave is bent at an angle while the reflected light wave is bounced back either at 90° or at angle less than 180°.

The refracted light wave changes its speed when it moves from one medium to another based on the density of the medium.

The reflected light does not change its speed once it contacts another medium. It just bounces back with the same speed.

Explanation:

4 0

3 years ago

Waves travel along a 100-m length of string which has a mass of 55 g and is held taut with a tension of 75 N. What is the speed

Dvinal [7]

Answer:

$v=369.27\frac{m}{s}$

Explanation:

The speed of the waves in a string is related with the tension and mass per unit length of the string, as follows:

$v=\sqrt\frac{T}{\mu}$

First, we calculate the mass per unit length:

$\mu=\frac{m}{L}\\\mu=\frac{55*10^{-3}kg}{100m}\\\mu=5.5*10^{-4}\frac{kg}{m}$

Now, we calculate the speed of the waves:

$v=\sqrt\frac{75N}{5.5*10^{-4}\frac{kg}{m}}\\v=369.27\frac{m}{s}$

8 0

3 years ago

How does it do? this photo ​

How does it do? this photo