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vovikov84 [41]
3 years ago
6

Identify the scientific law from among the following statements. A) The book fell 1 meter in 0.5 seconds B) Gravity acts upon ea

ch object on the Earth. C) The velocity of the book is 2 meters/second. D) I believe that the book will fall faster outside rather than inside the building. Eliminate Submit
Physics
2 answers:
Zolol [24]3 years ago
5 0

Answer:

The correct answer will be option-B

Explanation:

A scientific law is a statement which provides the description of the natural event in the form of facts so represents the factual description.

The scientific law becomes established only after the repeated experiment by another researcher provides the evidence and supports the scientific statement. The law once become established never changes and remains the same, unlike the scientific theory.

In the given question, the gravity acts on every object have been proved by the repeated experiments` by another researcher and hold true since the time has been stated for the first time.

Thus, Option-B is the correct answer.

zalisa [80]3 years ago
3 0
B is the answer I’m sure.
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What force is affected when the distance between two objects remains the same and the mass of each object is doubled?.
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Answer:

Gravitational force between masses there is Gravitational force .

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3 years ago
How is work and energy inter-related?? (in simple words)​
matrenka [14]

Answer:

The work and energy is inter- related because if we are energetic then only we are able to work.

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Explanation:

hope this helps you....

4 0
2 years ago
Spymaster Paul, flying a constant 215km/h horizontally in a low-flying helicopter, want to drop secret documents into his contac
aleksandrvk [35]

Answer:

\theta = 49.56 degree

Explanation:

Relative horizontal velocity of plane with respect to the car is given as

v_r = v_p - v_c

so we have

v_p = 215 km/h

v_c = 155 km/h

now we have

v_r = 215 - 155

v_r = 60 km/h

v_r = 16.67 m/s

Now time taken by the object to drop the vertical height is given as

y = \frac{1}{2}gt^2

78 = \frac{1}{2}(9.81)t^2

t = 3.98 s

so the distance of the car must be

d = v_r\times t

d = 16.67 \times 3.98

d = 66.47 m

Angle of the car with horizontal is given as

tan\theta = \frac{y}{x}

tan\theta = \frac{78}{66.47}

\theta = tan^{-1}(1.17)

\theta = 49.56 degree

5 0
3 years ago
A person lifts a 4.5 kg cement block a vertical distance of 1.2 m and then carries the block horizontal- ly a distance of 7.3 m.
Delvig [45]
<span>When a person lifts the block, the block has more potential energy. Therefore the person does positive work on the block. work = m g h work = (4.5 kg) (9.80 m/s^2) (1.2 m) work = 52.92 joules The person's work on the block is 52.92 joules When the block is being raised, the force of gravity opposes the motion. Therefore the force of gravity does negative work on the block. work = - (force) (h) work = - m g h work = -(4.5 kg) (9.80 m/s^2) (1.2 m) work = -52.92 joules The work done by the force of gravity on the block is -52.92 joules Note that when the block is moved horizontally, the potential energy does not change. Therefore there is no work done on the block when it moves horizontally (we are assuming that the kinetic energy does not change).</span>
6 0
3 years ago
A block is 10cm long, 5cm wide and 2cm high and weighs 100g. What is the volume of the block? What is the density?
Ivahew [28]

Answer:

1gm/cm^3

Explanation:

its the answer

5 0
3 years ago
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