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3 years ago

6

select all that apply the force of gravity a. changes slightly with the location on the earth b. decreases with height above sea

level c. is unaffected by altitude

1 answer:

Reptile [31]3 years ago

7 0

The answer to your question is C

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A. 230 N<br> B. 194 N<br> C. 250 N<br> D. 340 N

zimovet [89]

Answer:

I think C 250 it is correct

7 0

3 years ago

4. A car is accelerating at 40 m/s2, if the car is 400 kg how much force

Ksenya-84 [330]

Sorry I’m only in kindergarten is it 10kg must be supplied???

5 0

3 years ago

A 5.00 kg mass is attached to a spring on a horizontal frictionless surface. The elastic constant of the spring is 37.9 N/m. If

Fynjy0 [20]

45.6 i think i'm not sure pls double check

6 0

3 years ago

Find the currents flowing in the circuit in the figure below. (Assume the resistances are

Nitella [24]

By Kirchoff's law in left side loop

$E_1 + E_2 = {r_1 + R_1 + R_4)I_1 + (R_2 + r_2) I_3$

similarly kirchoff's law in right side loop

$E_3 - E_4 - E_2 = (r_3 + r_4 + R_3)I_2 - (R_2 + r_2)I_3$

also by junction law we know that

$I_1 = I_2 + I_3$

now by plug in all values we have

$18 + 3 = (0.5 + 8 + 15)I_1 + (10 + 0.25)I_3$

$21 = 23.5I_1 + 10.25I_3$

$12 - 24 - 3 = (0.75 + 0.25 + 12)I_2 - (10+ 0.25)I_3$

$-15 = 13I_2 - 10.25I_3$

So by solving above equations we have

$I_1 = 0.492 A$

$I_2 = -0.428 A$

$I_3 = 0.920 A$

6 0

4 years ago

An ideal blackbody in physics and astronomy is an object that

vfiekz [6]

Answer:absorbs and emits electromagnetic radiation at all wavelengths

Explanation:

A blackbody is a believed to be a perfect absorber and reflector of radiation. Blackbody, in physics, refers to a surface that absorbs all radiant energy that falls on it. It is supposed that because incident visible light will be absorbed rather than reflected, the surface will appear black.

8 0

3 years ago