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3 years ago

15

A digital camera uses one 6 V battery. The circuit that runs the flash and takes the pictures has a resistance of 3 Ω . What is

the current in the circuit?

1 answer:

Zolol [24]3 years ago

7 0

Just apply Ohm's Law

I=V/R=6/3=2A

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Why do you think that if you drop two balls, exactly two balls rise on the other side at a similar speed? Why doesn’t one ball f

Zolol [24]

It conserves both energy and momentum in the collision at the same time. By design, when the balls collide the strings that hold them up are vertical (assuming balls are only swung from one side).

: Hope this helps :)

7 0

3 years ago

Your electric drill rotates initially at 5.35 rad/s. You slide the speed control and cause the drill to undergo constant angular

Agata [3.3K]

Answer:

The angular displacement is $\theta = 29.6 \ rad$

Explanation:

From the question we are told that

The initial angular speed is $w = 5.35 \ rad/s$

The angular acceleration is $\alpha = 0.331 rad /s^2$

The time take is $t = 4.81 \ s$

Generally the angular displacement is mathematically represented as

$\theta = w * t + \frac{1}{2} \alpha * t^2$

substituting values

$\theta = 5.35 * 4.81 + \frac{1}{2} * 0.331 * (4.81)^2$

$\theta = 29.6 \ rad$

3 0

3 years ago

How would decreasing the amplitude of the sound waves from a television affect its intensity

Rainbow [258]

<span>The sound will decrease in volume.</span>

5 0

3 years ago

If two firecrackers produce a sound level 85dB. What level does the explosion of one firecracker produce?

mars1129 [50]

Level of sound is related to intensity by this equation

$L = 10 Log \frac{I}{I_o}$

given that

L = 85 dB

also we know that

$I_o = 10^{-12} W/m^2$

now we have

$85 = 10 Log \frac{I}{10^{-12}}$

By solving above equation

$I = 10^{8.5} * 10^{-12}$

$I = 3.16 * 10^{-4} W/m^2$

now above is the intensity due to two firecrackers and if we wish to find the sound level of one firecracker then we will find its half level intensity

$I_1 = \frac{I}{2}$

$I_1 = 1.58 * 10^{-4}$

now again by above formula

$L = 10 Log \frac{1.58 * 10^{-4}}{10^{-12}}$

$L = 82 dB$

8 0

3 years ago

The energy an object possesses due to its form and position is know as

zvonat [6]

I believe the energy being described is the potential energy. Potential energy is the stored energy, it is the energy an object has because of its position or shape. It is also the energy possessed by an object because of its position relative to other objects, stresses within itself, its electric charge, or other factors. The major types of energy include the gravitational energy of an object that depends on its mass and its distance from the center of mass.

5 0

4 years ago