If you were on the open ocean on a large ship, how could you determine the height of a wave?

Answers

Answer 1

Answer: If I were on the open ocean on a large ship, the way on how I can determine the height of a wave would be simply looking at the marks it leaves on the sides of the ship as it hits it. The wet part can be an estimate on the height of the wave.

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A 1.7-kg block of wood rests on a rough surface. A 0.011-kg bullet strikes the block with a speed of 670 m/s and embeds itself. The bullet-block system slides forward 2.4 m before coming to rest.

Answers

What is the coefficient of kinetic friction between the block and the surface? Express your answer using two significant figures.

Answer:

0.39

Explanation:

Given information

m1=1.7 Kg

m2=0.011 Kg

v2=670 m/s

d=2.4 m

m2v2=(m1+m2)v hence $v=\frac {m2v2}{m1+m2}$ and also $a=\frac {v^(2)}{2d}$

The deceleration due to friction is given by

$F=\mu_k N=\mu_k W=\mu_k (m1+m2)g$

$F=(m1+m2)a=\mu_k (m1+m2)g$ therefore $a=\mu_k g$

Therefore, $a=\frac {v^(2)}{2d}=\mu_k g$

$\mu_k=\frac {1}{2dg}(\frac {m2v}{m1+m2})^(2)=\frac {1}{2*2.4*9.81}* (\frac {0.011*670}{1.7+0.011})^(2)$

$\mu_k=0.39$

The driver of a car is driving the car very fast.The car hits a crash barrier and stops very quickly.
Describe why the driver is injured.

Answers

because the persons head is probably slammed into some part of the car and that means that the persons slammed on the brakes really hard so the person is probably injured
i hope this helps

The momentum of the car is probably very large before.When it crashes. the momentum changes suddenly in a short period of time.
Rate of change of momentum = Force

So, as the momentum changes in a very short period of time, the force exerted on the driver is very large.So, he gets injured

What is your mass in kilograms if you weigh 120 pounds on Earth?

Answers

1 kilogram weighs 2.205 pounds on Earth. 120/2.205 = 54.431 kilograms.

Select all that apply. Choose the statement(s) that best describe Earth's hydrologic, rock, and tectonic cycles.a. They continuously recycle Earth's materials.
b. They contribute to a balance or equilibrium of Earth's materials.
c. Old material is disposed of, never to be used again, and new material is created.
d. The cycles are powered by the earth's rotation and orbit.

Answers

Answer: a. They continuously recycle Earth's materials.

b. They contribute to a balance or equilibrium of Earth's materials.

Earth's hydrologic cycle involves the cycling of water. A natural replenishment process of water. Rock and tectonic cycles causes replenishment of rocks and geospheres. These cycles allows the generation of new materials. They contribute to a balance or equilibrium of Earth's material, for example magma release from earth crust during volcanic eruptions can destroy all nearby and superficial rocks, but when the magma solidifies to form new rocks. Therefore, materials which are destroyed are again created hence, equilibrium remains maintained.

Answer:

. They continuously recycle Earth's materials.

b. They contribute to a balance or equilibrium of Earth's materials.

Explanation:

According to Kepler's law of harmonies, which of these planets takes the longest to orbit the Sun?

Answers

The planet in the orbit with the largest major axis takes the longest
to complete one orbital revolution.

I'm sorry I can't be any more specific, but you didn't list any planets
to choose from.

Answer:

Explanation:

The planet in the orbit with the largest major axis takes the longest

to complete one orbital revolution.

Which of the following describes what causes the sailboat's velocity?O A. The water is pushing the boat 8 m/s downstream.
OB. The water is pushing the boat 20 m/s upstream.
C. The water is pushing the boat 6 m/s against the wind.
OD. The water is pushing the boat 10 m/s downstream

Answers

The answer is (c) is the correct answer

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