3 years ago

Which of the following is a true statement about objects in a vacuum?

Physics

2 answers:

Digiron [165]3 years ago

7 0

<span>C. A feather and a bowling ball will fall at the same rate.</span>

Fofino [41]3 years ago

6 0

C. A feather and a bowling ball will fall at the same rate. This is because there is no wind resistance and gravity pulls equally on both objects.

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Which formula correctly expresses the property density?

Olenka [21]

Answer:

Option A

D = m/v

Explanation:

Density is defined as mass per unit volume of an object. Therefore, D=m/v where m is the mass of the object and v is the volume

Therefore, option A is the right option

6 0

2 years ago

A 20-lb force acts to the west while an 80-lb force acts 45° east of north. The magnitu 80 lb 70 lb 067 lb 100 lb

natulia [17]

Answer:

option C

Explanation:

given,

force act on west = 20 lb

force act at 45° east of north = 80 lb

magnitude of force = ?

∑ F y = 80 cos 45⁰

F y = 56.57 lb

magnitude of forces in x- direction

∑ F x = -20 + 80 sin 45⁰

= 36.57 lb

net force

F = $\sqrt{F_x^2+F_y^2}$

F = $\sqrt{56.57^2+36.57^2}$

F = 67.36 lb≅ 67 lb

hence, the correct answer is option C

4 0

2 years ago

An important consideration in materials physics is the number of defects that are unavoidable due to statistical considerations.

goblinko [34]

Answer:

Explanation:

find attached the solution

8 0

2 years ago

Please help me! I don’t get this

goldfiish [28.3K]

The answer will be

(1) correct

(2) correct

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(4) Will not change

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4 0

2 years ago

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A friend waves & yells at you. If the sound took 3.20 seconds to reach you and the speed of sound is 340 m/s,

xeze [42]

Answer:

1088 m

Explanation:

3.00 seconds times by 340 =1020+68=1088

5 0

2 years ago