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Reil [10]
3 years ago
15

Two forces act in opposite directions on a wood block. What will happen if the forces are unbalanced?

Physics
1 answer:
mihalych1998 [28]3 years ago
8 0

Answer: Its the last one: The position of the block will change

Explanation: Since the forces are unbalanced, one side of the block will be stronger, therefore making the block move.

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A uniform magnetic field B⃗ , with magnitude 1.2 mT, is directed vertically upward throughout the volume of a laboratory chamber
nadezda [96]

Answer:

1. The proton is deflected toward the east by the magnetic force, but its kinetic energy does not change

Explanation:

This is consequently because the magnetic field unlike the electric field, deflects the electron but does not change its speed or kinetic energy.

3 0
4 years ago
The period of a pendulum is measured 16 times. The average value of the period over these 16 trials is calculated to be 1.50 sec
marin [14]

Answer:

The additional trials needed is 48 trials

Explanation:

Given;

initial number of trials, n = 16 trials

the standard deviation, σ = 0.24 s

initial standard error, ε = 0.06 s

The standard error is given by;

\epsilon = \frac{\sigma}{\sqrt{n} }

To reduce the standard error to 0.03 s, let the additional number of trials = x

0.03= \frac{0.24}{\sqrt{n+x} } \\\\0.03= \frac{0.24}{\sqrt{16+x} }\\\\0.03\sqrt{16+x} = 0.24\\\\\sqrt{16+x} = \frac{0.24}{0.03} \\\\\sqrt{16+x} = 8\\\\16+x = 8^2\\\\16+x = 64\\\\x = 64 -16\\\\x = 48 \ trials

Therefore, the additional trials needed is 48 trials.

6 0
3 years ago
The rate of change of velocity is called:.
Pavel [41]

Answer: Acceleration

Detailed Explanation:

Acceleration is defined as the rate of change of velocity.

6 0
2 years ago
Based on your knowledge of the electromagnetic spectrum, why are radio waves considered harmless while ultraviolet waves and x-r
Goryan [66]

The correct answer of this question is : A) Radio waves have longer wavelengths, lower frequency, and lower energy than ultraviolet waves and x-rays.

EXPLANATION :

Before going to answer this question, first we have to know the electromagnetic spectrum.

Electromagnetic spectrum is the arrangement of electromagnetic waves in the ascending order of frequency or descending order of wavelength.

When the waves are arranged in the ascending order of their frequency, then perfect order is given below as such -

Radio wave < Micro wave <  Infrared wave <   Visible light < U.V ray<  X-ray < Gamma ray .

Hence, we see that radio wave has the least frequency, and gamma ray has the most frequency.

We know that wavelength and frequency are inversely are inversely proportional to each other. Hence, radio wave has more wavelength and less frequency.

The wave having more frequency is more energetic. Hence, gamma is more energetic and radio wave is less energetic .



4 0
4 years ago
Read 2 more answers
Differentiate between loadstone and bar magnet​
MakcuM [25]
As nouns the difference between magnet and lodestone




is that magnet is a piece of material that attracts some metals by magnetism while lodestone is a naturally occurring magnet.
7 0
2 years ago
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