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professor190 [17]
3 years ago
14

I REALLY NEED HELP THIS IS DUE IN AN HOUR

Physics
1 answer:
11111nata11111 [884]3 years ago
6 0

Answer:

In analog technology, a wave is recorded or used in its original form. In digital technology, the analog wave is sampled at some interval, and then turned into numbers that are stored in the digital device. On a CD, the sampling rate is 44,000 samples per second. An analog recording is considered unlimited. Therefore, it can move to a higher and higher resolution without losing its original quality.

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A cube has a density of 1900 kg/m 3 kg/m3 while at rest in the laboratory. What is the cube's density as measured by an experime
Deffense [45]

Answer:

4847.94844926 kg/m³

Explanation:

\rho' = Actual density of cube = 1900 kg/m³

\rho = Density change due to motion

v = Velocity of cube = 0.92c

c = Speed of light = 3\times 10^8\ m/s

Relativistic density is given by

\rho=\dfrac{\rho'}{\sqrt{1-\dfrac{v^2}{c^2}}}\\\Rightarrow \rho=\dfrac{1900}{\sqrt{1-\dfrac{0.92^2c^2}{c^2}}}\\\Rightarrow \rho=\dfrac{1900}{\sqrt{1-0.92^2}}\\\Rightarrow \rho=4847.94844926\ kg/m^3

The cube's density as measured by an experimenter in the laboratory is 4847.94844926 kg/m³

3 0
3 years ago
Solve for the unknown in each of these circuits
Tamiku [17]

<u> Ohms law: </u> This law relates voltage difference between two points. Mathematically, the law states that V=IR;

                Where

                          V = voltage difference ; in volts

                          I = Current ; in Amperes

                          R = Resistance ; in ohms

<u>1. Answer : </u> given that R = 10 ; V= 12 V ;  I = ?

From ohms law,    I = V/R

                                = 12/10

                                = 1.2 Amp.

<u>2. Answer:</u>  given that R = 10 ; V= ? ;  I = 5

From ohms law,    V = IR

                                 = 10×5 = 50 V

<u>3 . Answer:</u>  given that R = ? ; V= 120 ;  I = 5

From ohms law,    R =  V/I

                                 = 120/5

                                 = 24 Ω

<u>4 . Answer:</u>  given that R = ? ; V= 10 ;  I = 20

From ohms law,    R =  V/I

                                 = 10/20

                                 = 0.5 Ω

<u>5 . Answer:</u>  given that R = 480 ; V= 24 ;  I = ?

From ohms law,  I =  V/R

                              = 24/480

                              = 0.05 A

<u>6. Answer:</u>  given that R = 150 ; V= ? ;  I = 1

From ohms law,  V = IR

                               = 1 × 150

                               = 150 V


6 0
4 years ago
if a force is applied to an object is not greater than the starting friction what will happen to the object
MArishka [77]

If you match the amount of static friction that can be generated when the object is at rest, it will not move because there is zero force the force has to be greater that the static friction in order to have it include motion. But if there was any more force will cause acceleration otherwise if it was lower force it will deceleration.

4 0
3 years ago
A body of mass 50k/g suspended from a spring balance attached to the celling of an elevator what is the reading of the balance i
adell [148]

Answer:

what grade you r u in.? lollll

8 0
3 years ago
A cart is pushed ahead for 3.5 s with a force of 360 N. Determine the change in momentum of the cart.
Katyanochek1 [597]
It is 356.5 just subtracts because it’s opposite
5 0
3 years ago
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