3 years ago

When a 60-watt light bulb is connected to a 120-volt source the current in the light bulb is?

Physics

1 answer:

alekssr [168]3 years ago

3 0

Current = Power/Voltage = 60/120 = 0.5 amperes

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Assume a change at the source of sound reduces the wavelength of a sound wave in air by a factor of 15. (i) what happens to its

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Frequency = wave speed / wavelength

If f = wave speed / 1/15*wavelength
then
f=15 *wave speed / wavelength

frequency is increased by a factor of 15

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3 years ago

N76 [4]

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I believe is C 0.20 if wrong plz correct me

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3 years ago

Select the correct answer.

Bess [88]

Answer:

Explanation:

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a=(V-V₀)/t

a=(10-20)/5=-2 m/s²

Acceleration of the car is -2 m/s²

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3 years ago

In order for a star to be able to be placed on the H-R Diagram, you must at least know the following characteristics:

Yuliya22 [10]

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4 years ago

An unwary football player collides with a padded goalpost while running at a velocity of 7.10 m/s and comes to a full stop after

Crazy boy [7]

Answer:

football player decceleration is 70.01 m/s^2

Explanation:

given data:

x = 0.360

initial velocity vi = 7.10m/s

final velocity vf = 0 m/s

we know that acceleration is given as a

$a =\frac{ vf^2 -vi^2}{2x}$

putting all value to get the desired value of acceleration:

$a = \frac{ -(7.10)^2}{2*.360}$

a = - 70.01 m/s^2

negative sign indicate deceleration

football player decceleration is 70.01 m/s^2

7 0

4 years ago