2 years ago

The table below shows the approximate distances of two stars from Earth.

Physics

1 answer:

Gemiola [76]2 years ago

6 0

I think that the answer is c. good luck

You might be interested in

It a car travels 2km in 1 hour what is the speed

Trava [24]

Answer:

1.243 mph

Explanation:

7 0

2 years ago

Sarah is sitting at the top of the slide in the school's playground. Which of the following changes will increase Sarah's kineti

Ray Of Light [21]

B; kinetic energy is anything in motion

7 0

2 years ago

Type the correct answer in the box. Round your answer to the nearest whole number. Calculate the man’s mass. (Use PE = m × g × h

Blababa [14]

Answer:

56 kg

Explanation:

The change in potential energy of the man is given by:

$\Delta U = mg \Delta h$

where

m is the man's mass

g is the gravitational acceleration

$\Delta h$ is the change in height of the man

In this problem, we have:

$\Delta U=4620 J$ is the gain in potential energy

g = 9.8 m/s^2 is the gravitational acceleration

$\Delta h=8.4 m$ is the change in height

Re-arranging the equation and substituting the numbers, we find the mass:

$m=\frac{\Delta U}{g\Delta h}=\frac{4620 J}{(9.8 m/s^2)(8.4 m)}=56 kg$

6 0

2 years ago

Read 2 more answers

A boy with a mouse is 80 kg stands on a scale in an ascending elevator with an acceleration of 3 m/s What is the resultant upwar

Rus_ich [418]

Answer:

Upward force on the boy will be 1024 N

Explanation:

We have given mass of the boy m = 80 kg

Acceleration due to gravity $g=9.8m/sec^2$

It is given that elevator is ascending with acceleration of $3m/sec^2$

So net acceleration on the boy = 9.8+3 = 12.8 $m/sec^2$ ( As the car elevator is moving ascending )

So upward force on the boy will be equal to F = m(g+a)

So $F=80\times 12.8=1024N$

So upward force on the boy will be 1024 N

3 0

2 years ago

Which example best illustrates that light behaves like particles?

AlekseyPX

I would say B. Because actual mass would ricochet off the sidewalk.

8 0

2 years ago

Read 2 more answers