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diamong [38]
4 years ago
15

How long did it take until all the starting material was gone?

Physics
1 answer:
Viktor [21]4 years ago
6 0
Time = (amount you started with) / (rate at which it disappeared) .
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Calculate the acceleration of a 2000-kg.
Paraphin [41]

Answer:

0.25m/s^{2}

Explanation:

In this problem we use Newton's Second Law formula:

A= \frac{F}{M}

F is for the force being applied, in this situation. The 500N is being thrust ed by the engine.

Substitute the force and mass:

A = \frac{500 N}{2000} ms^{2}

A = \frac{1}{4} ms^{2}

A = 0.25m/s^2

6 0
4 years ago
What is atmospheric refraction?​
patriot [66]

Answer:

Atmospheric Refraction is the bending of light rays when they pass through the layers of earths atmosphere

Explanation:

Hope this helps

5 0
3 years ago
Read 2 more answers
On planet X, an object weighs 7.04 N. Onplanet B where the magnitude of the free-fallacceleration is 1.91g(whereg= 9.8 m/s2isthe
timurjin [86]
<h2>Mass of object in Earth is 1.37 kg</h2>

Explanation:

On planet B where the magnitude of the free-fall acceleration is 1.91g , the object weighs 25.74 N.

We have

           Weight = Mass x Acceleration due to gravity

On planet B

           25.74 = Mass x 1.91 g

           25.74 = Mass x 1.91 x 9.81

           Mass = 1.37 kg

Mass is constant for an object. It will not change with location.

Mass of object in Earth = Mass of object in Planet B

Mass of object in Earth = 1.37 kg

4 0
3 years ago
Transverse thrusters are used to make large ships fully maneuverable at low speeds without tugboat assistance. A transverse thru
suter [353]

Answer:

Thrust developed = 212.3373 kN

Explanation:

Assuming the ship is stationary

<u>Determine the Thrust developed</u>

power supplied to the propeller ( Punit ) = 1900 KW

Duct distance ( diameter ; D  ) = 2.6 m

first step : <em>calculate the area of the duct </em>

A = π/4 * D^2

   =  π/4 * ( 2.6)^2  = 5.3092 m^2

<em>next : calculate the velocity of propeller</em>

Punit = (A*v*β ) / 2  * V^2     ( assuming β = 999 kg/m^3 ) also given V1 = 0

∴V^3 = Punit * 2 / A*β

         = ( 1900 * 10^3 * 2 ) / ( 5.3092 * 999 )

hence V2 = 8.9480 m/s

<em>Finally determine the thrust developed </em>

F = Punit / V2

  = (1900 * 10^3) / ( 8.9480)

  = 212.3373 kN

8 0
3 years ago
A unit for measuring frequency is? ohm watt ampere hertz
pishuonlain [190]

"Frequency" is a measure of how frequent something is.

Its unit is the "Hertz".

1 Hertz  =  1 per second

8 0
3 years ago
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