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Ksivusya [100]
3 years ago
7

10. Heat is the transfer of thermal energy from one object to another because of a difference in

Physics
1 answer:
stiv31 [10]3 years ago
7 0

Answer:

Temperature

Explanation:

Heat only flows from one point to the other due to the difference in temperature.

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An object of mass 20 kg is raised vertically through a distance of 8 m above ground level. If g = 10 m/s2, what is the gravitati
IgorC [24]

2400joules

Explanation:

P.E

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=2400joules

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3 0
3 years ago
A block oscillating on a spring has period T = 2.8 s . (Note: You do not know values for either m or k. Do not assume any partic
olasank [31]

Answer:

Part a)

T = 3.96 s

Part b)

T = 1.98 s

Part c)

T = 2.8 s

Explanation:

As we know that time period of spring block system is given as

T = 2\pi\sqrt{\frac{m}{k}}

T = 2.8 s

Part a)

If the mass of the block attached is doubled

then we will have

T' = 2\pi\sqrt{\frac{2m}{k}}

T' = \sqrt2 T

T' = 3.96 s

Part b)

If the spring constant is doubled

then we have

T' = 2\pi\sqrt{\frac{m}{2k}}

T' = \frac{T}{\sqrt2}

T' = 1.98 s

Part c)

If the amplitude is halved but mass and spring constant will remain the same

so here we know that time period does not depends on Amplitude

so we will have

T = 2\pi\sqrt{\frac{m}{k}}

T = 2.8 s

7 0
2 years ago
Two long, parallel wires are separated by a distance of 2.2 cm. The force per unit length that each wire exerts on the other is
VikaD [51]

Answer:

i_2 = 7.6 A

Explanation:

As we know that the force per unit length of two parallel current carrying wires is given as

F = \frac{\mu_o i_1 i_2}{2\pi d}

here we know that

F = 3.6 \times 10^{-5} N/m

i_1 = 0.52 A

d = 2.2 cm

now from above equation we have

3.6 \times 10^{-5} = \frac{4\pi \times 10^{-7} (0.52)(i_2)}{2\pi (0.022)}

3.6 \times 10^{-5} = 4.73 \times 10^{-6} i_2

i_2 = 7.6 A

5 0
2 years ago
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