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Sergeeva-Olga [200]
3 years ago
7

Which of the following exists around every object that has mass?

Physics
2 answers:
sp2606 [1]3 years ago
7 0

Answer:

Which of the following exists around every object that has mass?

A.

a magnetic field

B.

magnetic poles

C.

a gravitational field

D.

electric charges

Explanation:

ICE Princess25 [194]3 years ago
6 0

Answer:

A is the correct answer.

Explanation:

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An example of kinetic energy is a _____.
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Answer:

An example of kinetic energy is a <u><em>car coming to a stop</em></u>

Explanation:

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3 years ago
A 100 kg box is suspended from two ropes. The "left rope makes an angle of 20" degrees with the vertical, and the right rope mak
GarryVolchara [31]

Explanation:

It is given that,

Mass of the box, m = 100 kg          

Left rope makes an angle of 20 degrees with the vertical, and the right rope makes an angle of 40 degrees.  

From the attached figure, the x and y component of forces is given by :

T_{1x} =-T_1 cos (20)

T_{2x} = T_2 cos (40)

mg_x = 0

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T_{2y} = T_2 sin (40)

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R_x=-T_1 cos (20)+T_2 cos (40)+0

R_y=T_1 sin(20)+T_2 sin(40)-mg

As the system is balanced the net force acting on it is 0. So,

-T_1 cos (20)+T_2 cos (40)+0=0.............(1)

T_1 sin(20)+T_2 sin(40)-100\times 9.8=0..................(2)

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T_1=866.86\ N (tension on the left rope)

T_2=1063.36\ N (tension on the right rope)

So, the tension on the right rope is 1063.36 N. Hence, this is the required solution.                            

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