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TiliK225 [7]
3 years ago
13

How can a scientist ensure that his or her data are reliable?

Physics
2 answers:
laiz [17]3 years ago
7 0
If the scientist repeats the experiment over and over and gets the same results. Also if the scientist peer reviews the experiment to make sure there is no bias in his or her results.

AleksAgata [21]3 years ago
6 0

Answer:

By repeating trials during an experiment

Your welcome  e d g e n u i t y  peeps! ♥

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The ability of sculptural material to resist forces of pressure, like gravity, is called its __________.
Vitek1552 [10]
I think the answer would be tensile, I’m sorry if it’s wrong
3 0
3 years ago
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Dmitrij [34]
Take 10m/s^2 for the gravitational acceleration, as we know this is a free fall, we can use the equation: d=1/2*g*t^2

Substitute g=10m/s^2, t=5s, d=125m
7 0
3 years ago
After landing on an unfamiliar planet, a space explorer constructs a simple pendulum of length 48.0 cm . The explorer finds that
Ber [7]

Answer:

g = 12.22 m/s²

Explanation:

The time period of this pendulum is given as follows:

T = \frac{time\ taken}{no. of cycles}\\\\T = \frac{144\ s}{93}\\\\T = 1.55\ s

but the formula for the time period of a simple pendulum is as follows:

T=2\pi \sqrt{\frac{l}{g}}\\

where,

L = length of pednulum = 48 cm = 0.48 m

g = magnitude of th gravitational acceleration on this planet = ?

Therefore,

1.55\ s=2\pi \sqrt{\frac{0.48\ m}{g}}\\\\\sqrt{g} = 2\pi \sqrt{\frac{0.48\ m}{1.55\ s}}\\\\g = 3.49^{2}\\

<u>g = 12.22 m/s²</u>

6 0
3 years ago
A 18.6 V battery does 1,249.0 J of work transferring charge. How much charge is<br> transferred?
saw5 [17]

Answer: 67.2 C

Explanation:

Use formula

Voltage = work / charge

Charge = work / voltage

Charge = 1249 / 18.6 C

Charge = 67.2 C

3 0
3 years ago
A ball is thrown upward in the air by a passenger on a train that is moving with constant velocity. Describe the path of the bal
cestrela7 [59]

Answer:

a) For the passenger the ball is seen to go up in a straight line path, and fall back to the hands of the passenger in a straight line path.

b) For a stationary observer on the ground, the ball is seen to take a parabolic path from when it is thrown up to when it fall down back on the palms of the passenger.

Explanation:

If a ball is thrown up in a vehicle moving with a constant velocity, the ball will be seen as the passenger, who is on the same frame of reference as the ball, to go up and down in a vertical straight line path. For an observer on the ground, this is different, as the ball is seen to to have both a relative vertical and horizontal component of motion, making the ball take a parabolic path from the time it was thrown, to when it falls back to the hands of the passenger.

8 0
4 years ago
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