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Illusion [34]
2 years ago
10

A student places two books on a table. One book weighs less than the other book

Physics
1 answer:
Gnoma [55]2 years ago
6 0
The book that weighs less
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You watch a distant lady driving nails into her front porch at a regular rate of 1 stroke per second. You hear the sound of the
Igoryamba

Answer:

λ = 1360 m

Explanation:

Given data:

frequency of driving nails is given as 1 stroke per second mean at every 0.25 sec she hit the nails

speed of sound is given as 340 m/s

we know that the wave equation is given as

Speed = frequency × wavelength,

v = f × λ

where,

v = speed in meters/second (m/s)

f = frequency in Hertz (Hz)

substituing value to get wavelength  of her driving nails

340 m/s = (1Hz)\times  \lambda

\lambda = \frac{340}{0.25}

λ = 1360 m

4 0
3 years ago
Read 2 more answers
Two charges, q1 and q2, are separated by a certain distance r. if the magnitudes of the charges are halved and their separation
vazorg [7]

The electrical force between these two charges remains the same. In coulomb’s law, it states that the magnitude of two charges (product of two charges) is inversely proportional to the square of the distance. Since both the magnitude and the distance are halved, therefore, the change in both quantities will have no effect in the value of electrical force.

6 0
3 years ago
When the temperature of water increases from room temperature to 90*C the process of heating the water is
polet [3.4K]
The process is called ENDOTHERMIC
8 0
3 years ago
Radon is the heaviest naturally radioactive
Burka [1]

Answer:

Yes, it is the heaviest gas.

Explanation:

4 0
3 years ago
Light travels 300 000 000 m/s and one year has approximately 32 000 000 second a light year is the distance light travels in one
Lelu [443]

Explanation:

It is given that,

Speed of light, v=300 000 000\ m/s=3\times 10^8\ m/s

Seconds in 1 year, t=32 000 000=32\times 10^6\ s

We need to find the distance traveled by light in one year. Speed of an object is given by :

v=\dfrac{d}{t}

So,

d=v\times t\\\\d=3\times 10^8\times 32\times 10^6\\\\d=9.6\times 10^{15}\ m

Since,

1\ \text{light year}=9.46\times 10^{15}\ m\\\\1\ m=\dfrac{1}{9.46\times 10^{15}}\ \text{ly}\\\\9.6\times 10^{15}\ m=\dfrac{9.6\times 10^{15}}{9.46\times 10^{15}}\\\\d=1.01\ \text{ly}

So, the distance covered by light is 1.01 light years.

8 0
3 years ago
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