3 years ago

A car accelerates ( speeds up) uniformly from 5 m/s * t * o 15 m/s in 2 seconds, calculate the car's acceleration?

Physics

1 answer:

Agata [3.3K]3 years ago

6 0

Answer:

0.4 ms-²

Explanation:

v = u+ at

15 = 5+ a×25

10/5 = a

a = 0.4 ms-²

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diamong [38]

Answer:

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Explanation:

Heat required to evaporate the water is given by

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here we know that

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now we have

$Q = (0.200)(2.25 \times 10^6 J/kg)$

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3 years ago

Which process can transfer energy to a solid metal block

gladu [14]

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3 years ago

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They realize there is a thin film of oil on the surface of the puddle. If the index of refraction of the oil is 1.81, and they o

Sphinxa [80]

Answer:

The right solution is "165.8 nm".

Explanation:

Given:

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n = 1.81

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λ = 600 nm

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3 0

3 years ago

Two charged objects have a repulsive force of .80 N. If the charge of one of the objects is doubled, then what is the new force?

sveticcg [70]

The new force would be 1.6 N.
Since the charges multiply as variables (q1)x(q2), then it would simply be double (q1)x(q2), or 1.6.

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3 years ago

How much mass should be attached to a vertical ideal spring having a spring constant (force constant)of 39.5 N/m so that it will

nordsb [41]

Answer:

m = 1 kg

Explanation:

Given that,

The force constant of the spring, k = 39.5 N/m

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The frequency of oscillation is given by the formula as formula as follows :

$f=\dfrac{1}{2\pi}\sqrt{\dfrac{k}{m}} \\\\f^2=\dfrac{k}{4m\pi^2}\\\\m=\dfrac{k}{4\pi^2 f^2}\\\\m=\dfrac{39.5}{4\pi^2 \times (1)^2}\\\\m=1\ kg$

So, the mass that is attached to the spring is 1 kg.

6 0

2 years ago