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hjlf
3 years ago
5

Which two types of electromagnetic waves have higher frequencies than the waves that make up ultraviolet light?

Physics
1 answer:
lesya692 [45]3 years ago
8 0

Answer:

Gamma rays and x rays

Explanation: just took the test

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Please help with these physics problems 1. A soccer ball is dropped from the top of a building. It takes 5.8 seconds to fall to
Tatiana [17]

Answer:

1.) h = 164.8 m

2.) U = 49.1 m/s

3.) t = 1.43 seconds

Explanation:

1.) A soccer ball is dropped from the top of a building. It takes 5.8 seconds to fall to the ground. The height of the building is...? 

Since the soccer ball is dropped from the building, the initial velocity U will be equal to zero

Using second equation of motion

h = Ut + 1/2gt^2

Substitutes the time into the formula

h = 1/2 × 9.8 × 5.8^2

h = 164.8 m

2. The Falcon 9 launches to a height of 123 meters. What is its vertical initial velocity?

At maximum height final velocity = 0

Using the third law of motion

V^2 = U^2 - 2gH

0 = U^2 - 2 × 9.8 × 123

U^2 = 2410.8

U = 49.1 m/s

3. An apple falls from rest off a 10.m m tree. How long will it take before it hits the ground?

Since the apple fall from rest, the initial velocity U will be equal to zero

Using the second equation of motion,

h = Ut + 1/2gt^2

substitute all the parameters into the formula

10 = 1/2 × 9.8 × t^2

10 = 4.9t^2

t^2 = 10/4.9

t^2 = 2.04

t = 1.43 seconds

8 0
4 years ago
Which of the following is not a function of PACs?
Katena32 [7]

Answer:

i think D

hope this helps

let me know if i'm wrong i will change the answer

Explanation:

5 0
3 years ago
Read 2 more answers
A metal ball has a mass of 2kg and a volume of 6 m3. What is its density
Lena [83]

Answer: The answer is 333.3333 repeating

Explanation:

Divide the mass by the volume.

8 0
3 years ago
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What is the frequency of light for which the wavelength is 7.1 × 102 nm?
Brilliant_brown [7]

Answer:

Frequency, f=4.22\times 10^{14}\ Hz

Explanation:

Given that,

Wavelength of the light,

\lambda=7.1\times 10^2\ nm=7.1\times 10^2\times 10^{-9}\ m\\\\\lambda=7.1\times 10^{-7}\ m

We need to find the frequency of light. We know that light is an electromagnetic wave. It moves with the speed of light. So,

c=f\lambda

f is the frequency of light

f=\dfrac{c}{\lambda}\\\\f=\dfrac{3\times 10^8\ m/s}{7.1\times 10^{-7}\ m}\\\\f=4.22\times 10^{14}\ Hz

So, the frequency of light is 4.22\times 10^{14}\ Hz. Hence, this is the required solution.

5 0
4 years ago
If the normal force exerted by the track on the car when it is at the top of the track (point B) is 6.00 N , what is the normal
Eddi Din [679]

Answer:

So, the force, F is the agent which provides the basic property of motion or rest to the body.While, the car is more obviously to have a mass, m and that the angle withe road or surface is also given which is normal to the road(i.e angle =90 degree). Then we say that lets say that the car is moving with the constant velocity of 20 m/sec and its kept unchanged by the car. So, we have the mass, m as 1 kg for the car and the value of the gravity we have the g=9.8 m/sec.

Now,

We have F=ma,

and a=v/t,

so we can have another equation for it as,

Now, providing the required data  to, it;  ∴t =2 sec,

F=(1)×(20/2),

  • <u>F=10 N.</u>
  • So, the car would be acting the force,F of about 10 N  while the car is present on the lower region of the track.

4 0
3 years ago
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