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postnew [5]
2 years ago
6

What is the tension on a rope causing a 7.50 kg box to accelerate to the right at 4.00 m/s^2 across a frictionless surface

Physics
1 answer:
Brut [27]2 years ago
4 0

Answer:

T = 7.5× 4 =28.0N

.............

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If the pressure of gas is doubled and its absolute temperature is quadrupled, the volume is what factor times the original?
Lapatulllka [165]

Answer:

Volume will increase by factor 2

So option (A) will be correct answer  

Explanation:

Let initially the volume is V pressure is P and temperature is T

According to ideal gas equation PV=nRT, here n is number of moles and R is gas constant

So V=\frac{nRT}{P}....................eqn 1

Now pressure is doubled and temperature is quadrupled

So new volume V_{new}=\frac{nR4T}{2P}=\frac{2nRT}{P} ........eqn 2

Now comparing eqn 1 nad eqn 2

V_{new}=2V

So volume will increase by factor 2

So option (A) will be correct answer

8 0
2 years ago
who developed the quantum theory? who is remembered as the father of nuclear science? who developed the theories of relativity?
DerKrebs [107]

Answer:

1.Albert Einstein is considered as the one who developed the quantum theory. Although Planck gives the idea of quantized energy but Einstein gives the theory that not only the energy the wave or radiation itself is quantized.

2. Earnest Rutherford is considered as the father of nuclear science as he gives the concept of half life and  perform tests of alpha and beta radiations in various elements.

3. Again Albert Einstein was the one who gave the theory of relativity in 1905.

Explanation:

7 0
3 years ago
Two plates of area 30.0 cm^2 are separated by a distance of 0.0590 cm. If a charge separation of 0.0240 μC is placed on the two
topjm [15]

Answer:

V=533.33 V

Explanation:

 Given that

A= 30 cm²

d= 0.059 cm

Q= 0.0240 μ C

We know that capacitance given as

C=\dfrac{\varepsilon _oA}{d}

Now by putting the values

C=\dfrac{8.85\times 10^{-12}\times 30\times 10^{-4}}{0.059\times 10^{-2}}

C=4.5\times 10^{-11}\ F

Voltage difference given as

Q= V .C

V=Q/C

V=\dfrac{0.0240\times 10^{-6}} {4.5\times 10^{-11}}

V=533.33 V

3 0
2 years ago
Chemical bonds form when atoms A.) gain protons. B.) combine nuclei C.) give up neutrons. D.) share or transfer electrons
frutty [35]
The correct answer is (D)
8 0
3 years ago
Which converts mechanical energy to electrical energy?
LiRa [457]

Answer:

c. A Generator

Explanation:

The whole point of a generator is to produce electrical energy. The generator will use a mechanical motor usually running off of gas to produce electricity.

6 0
3 years ago
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