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anastassius [24]
2 years ago
13

7. What is the velocity of an object that has a mass of 4.5 kilograms and

Physics
1 answer:
labwork [276]2 years ago
7 0

Answer:

266.66 m/s

Explanation:

p=mv

1200=4.5v

v=266.66 m/s

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If you cut a piece of wood in half, each half would have *
Anon25 [30]

Answer:

c

Explanation:

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3 years ago
if you put a pencil in a cup of water, it looks as if it is broken and larger in the water. This is because light waves
vladimir1956 [14]

Answer:

When light enters from air to water i.e. it is moving from rarer to denser medium, it changes its original path as there is a change of speed of light and deflects itself towards the normal. This is known as the refraction of light and this is why a pencil in a cup of water looks as if it is broken and larger.

Explanation:

5 0
3 years ago
What is the refraction index of a medium?
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<span>the ratio of the velocity of light in the medium over the velocity of light in a vacuum</span>
6 0
3 years ago
The instantaneous speed of a particle moving along one straight line is v(t) = ate−6t, where the speed v is measured in meters p
beks73 [17]

Answer:

v_max = (1/6)e^-1 a

Explanation:

You have the following equation for the instantaneous speed of a particle:

v(t)=ate^{-6t}   (1)

To find the expression for the maximum speed in terms of the acceleration "a", you first derivative v(t) respect to time t:

\frac{dv(t)}{dt}=\frac{d}{dt}[ate^{-6t}]=a[(1)e^{-6t}+t(e^{-6t}(-6))]  (2)

where you have use the derivative of a product.

Next, you equal the expression (2) to zero in order to calculate t:

a[(1)e^{-6t}-6te^{-6t}]=0\\\\1-6t=0\\\\t=\frac{1}{6}

For t = 1/6 you obtain the maximum speed.

Then, you replace that value of t in the expression (1):

v_{max}=a(\frac{1}{6})e^{-6(\frac{1}{6})}=\frac{e^{-1}}{6}a

hence, the maximum speed is v_max = ((1/6)e^-1)a

5 0
3 years ago
What is the unit for weight?
Ludmilka [50]

Answer:

Unit of weight is Newton(N)

Explanation:

3 0
3 years ago
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