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4 years ago

4.

Physics

1 answer:

Ulleksa [173]4 years ago

4 0

The correct answer is C. Universal Gravitation (it was written by Issac Newton)

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I think C is wrong.

Lorico [155]

the answer is correct why.

EXPLANATION:

First copy the 15 and u will × now in the no. of (9.8 ×1.5) the equal is 15 m/s -14.7m/s so we - the now the 15-14.7 and the ANSWER IS 0.3m/s.

Explanation:

APPLYOURKNOWLEDGE-_-

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4 0

3 years ago

To see if such a strong magnetic field could pose health risks for nearby workers, calculate the maximum acceleration the field

Evgesh-ka [11]

bro how do you not know this cmon bro what the actual heck dudeExplanation:

6 0

3 years ago

(25%) Problem 3: A bullet is fired horizontally into an initially stationary block of wood suspended by a string and remains emb

Rus_ich [418]

Answer:

Thus, the initial velocity of the bullet is 507.5 m/s.

Explanation:

mass of bullet, m = 0.0085 kg

mass of block, M = 0.99 kg

Height raised, h = 0.95 m

Let the initial velocity of bullet is u and the final velocity of block and bullet system is v.

Use conservation of energy

Potential energy of bullet bock system = kinetic energy of bullet block system

$(M+m)\times g\times h = \frac{1}{2}\times \left ( M+m \right )v^{2}$

$v=\sqrt{2gh}$

$v=\sqrt{2\times 9.8\times 0.95}=4.32 m/s$

Now use conservation of linear momentum

mu = (M+m) v

0.0085 x u = (0.99 + 0.0085) x 4.32

0.0085 u = 4.314

u = 507.5 m/s

Thus, the initial velocity of the bullet is 507.5 m/s.

4 0

3 years ago

Gamma rays are used to _____.

Ipatiy [6.2K]

d. check pipes for cracks or rust

The answer above is correct.

Gamma rays are primarily used in the medical field to kill cancer cells and examine the body's internal structures.

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3 years ago

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Most of the mass of the milky way exists in the form of.

Andrews [41]

Answer: Dark matter.

Explanation: Hope it helps :)

7 0

3 years ago

Read 2 more answers