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s2008m [1.1K]
3 years ago
7

Which two forms of electromagnetic energy are used to produce the

Physics
1 answer:
Mars2501 [29]3 years ago
8 0

Answer:

3. ultraviolet and x rays

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A 70kg car drives through a curve with radius 50m. What is the minimum angle the road should be tilted to keep the car on the ro
worty [1.4K]

when car moves along a circular path then centripetal force for taking turn will be provided by the component of normal force

Let the road is tilted by some angle

so force equations are given as

F_n cos\theta = mg

F_n sin\theta = \frac{mv^2}{R}

now divide two equations

tan\theta = \frac{v^2}{Rg}

now as it is given to us that

v = 80 km/h

v = 80* \frac{5}{18} = 22.2 m/s

R = 50 m

now we have

tan\theta = \frac{22.2^2}{50*9.8}

tan\theta = 1

\theta = tan^{-1}1

\theta = 45^0

so it is inclined at an angle of 45 degree

8 0
3 years ago
Ocean waves travel in to the beach at an average velocity of 2.5 m s . If these waves come in 4 seconds apart, what is the avera
cestrela7 [59]

2.5 \times 4
6 0
3 years ago
Read 2 more answers
A sprinter who is running a 200-m race travels the second 100 m in much less time than the first 100m because
Harrizon [31]

Answer:

He is warmed up now

Explanation:

His muscles are better and stretched now

3 0
3 years ago
Read 2 more answers
The force diagram represents a girl pulling a sled with a mass of 6.0 kg to the left with a force of 10.0 N at a 30.0 degree ang
Vilka [71]
Normal Force = 54 N
acceleration = 1.2 m/s^2

For Normal Force:
According to the force diagram, we can come up with the equation (all up and down forces):

10 sin 30 + Normal Force - 58.8 = 0
Normal Force = 53.8 N = 54 N

For acceleration:
According to the force diagram, we can come up with the equation (all left and right forces):

10 cos 30 - 1.5 = (6.0) (Acceleration)
Acceleration = 1.19 m/s^2 = 1.2 m/s^2 
3 0
4 years ago
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A truck’s engine produces 20,000 N of force. It dumps its load and its mass is reduced to 10,000 kg. What is the acceleration of
spayn [35]

Explanation:

If F = m*a, we can easily solve for a.

a = 20000/10000

7 0
3 years ago
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