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Solnce55 [7]
3 years ago
9

(The answer is probably obvious for some but I'm not big on science. Not my cup of English-..I'm implying Enlish is more my styl

e...but yeah..help-)
This ray shows the image formed when a candle is placed in front of a curved mirror. Which of the following best describes the light ray shown in red?
A. The ray travels from the focal point to the image and continues in a straight line.
B. The ray travels toward the vertex and is reflected at an equal angle on the opposite side of the axis.
C. The ray travels parallel to the axis and is reflected as if it came from the focal point.
D. Tha ray travels toward the focal point and is reflected parallel to the axis.

Physics
1 answer:
Lelechka [254]3 years ago
4 0
D because it do da skiddly bip bop boop
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Answer:

Explanation:

Since the sled plus passenger moves with constant velocity , force applied will be equal to frictional force. Let the force applied be F

a ) Frictional force = μ R = F cosφ

R = mg - F sinφ

μ(mg - F sinφ)  = F cosφ

μmg = F (μsinφ+cosφ)

F = μmg / (μsinφ+cosφ)

Work done

= F cosφ x d

= μmg x cosφ x d / (μsinφ+cosφ)

b )Work done

= 0.13 x 52.3 x 9.8 cos36.7 x 21.8 / ( 0.13 sin36.7 +cos36.7)

= 1164.61 / .87946

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c ) work done on the sled by friction

= - (work done by force)

= - μmg x cosφ x d / (μsinφ+cosφ)

d ) work done on the sled by friction

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3 0
4 years ago
1. Describe the differences in the ways the sand castle is changed by an ocean wave and by Dylan stomping on it
Snezhnost [94]

A sand castle that was changed by the ocean waves would be slowly taken away from by the waves and would just become a smooth mound of sand. If Dylan stomped on it then it would still have all of the same sand as before but in a different shape. It would also become a mound of sand but it would have all the same sand as before.


(I don't know if I was supposed to talk about fancy physics stuff so I just gave a basic explanation. I don't know if my answer is really right or not... hope it helped though :))

6 0
3 years ago
How many joules of gravitational potential energy does a person have after they went up stairs that are 10 meters tall? Assume t
Sonja [21]

Answer:

P = 5880 J

Explanation:

Given that,

The mass of a person, m = 60 kg

The height of the stairs, h = 10 m

We need to find the gravitational potential energy of the person. The formula is as follows :

P=mgh

Substitute all the values,

P=60\times 9.8\times 10\\\\P=5880\ J

So, the required gravitational potential energy is equal to 5880 J.

8 0
3 years ago
The direction of 0.04 T magnetic field is 30 degrees above a horizontal, a wire moves horizontally
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Answer:

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Explanation:

agagagataggagagwghahahsgsgw

5 0
3 years ago
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svetlana [45]

Answer:

20 to 30

Explanation:

20 to 30 is the correct answer

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