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asambeis [7]
3 years ago
13

Gravitational pull is determined by ______?

Physics
1 answer:
IgorLugansk [536]3 years ago
6 0
The answer is D. mass
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A voltage of 12 cos(I000t+45) Vis applied to a circuit in which a resistor of 4 .n, aninductor of L H, and a capacitor of 100 μF
vlabodo [156]

Answer:

0.01 H

Explanation:

V = 12 cos (1000t + 45)

C = 100 micro farad

Let the inductance be L .

When the current and the voltage are in the same phase so it is the condition of resonance.

So capacitive reactance = inductive reactance

Xc = XL

1/ωC = ωL

L = 1 / ω²C

By comparisonV = Vo Cos (ωt + Ф)

ω = 1000 rad/s

L = 1 / (1000 x 1000 x 100 x 10^-6)

L = 1 / 100

L = 0.01H

thus, the inductance of the inductor is 0.01 H.

8 0
3 years ago
Help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 39 points and will give branlist asap!
xz_007 [3.2K]

Answer:

Graph for object that is not moving: B

Graph for object that is speeding up: D

Explanation:

A.) In order to represent that an object is not moving, you must either show that there is no velocity (0 m/s) or show a position over time graph that is a horizontal line.

Because the position is the same as time increases, the graph shows that there the object must be at rest, as there is no change in position due to velocity. (Velocity must be 0m/s)

B.) In order to represent an object is speeding up, the position time graph must either be a positive exponential function, the velocity time graph must be a positive, linear line, or the acceleration over time graph must be a positive, horizontal line.

Why is D the correct answer? Because if an object is speeding up, you know that the value of its speed (velocity) is increasing at some rate. And since speeding up refers to positive change, the function of velocity over time graph must be a positive function.

7 0
3 years ago
The potential difference between A and B is 5.0 V. A proton starts from rest at A. When it reaches B what is its kinetic energy?
Aleksandr [31]

Answer:

total kinetic energy is 8 × 10^{-19} J

Explanation:

given data

potential difference = 5 V

e = 1.60 × 10^{-19} C

to find out

what is kinetic energy

solution

we will apply here conservation of energy that is

change in potential energy is equal to change in kinetic energy

so

change potential energy is e × potential difference

change potential energy =  1.60 × 10^{-19} × 5

change potential energy = 8 × 10^{-19} J

so change in kinetic energy  = 8 × 10^{-19} J

and we know proton start from rest that mean ( kinetic energy is 0 ) so

change in KE is total KE

total kinetic energy is 8 × 10^{-19} J

3 0
3 years ago
Sections of rivers blocked by landslides, debris, or dams are called?
sergij07 [2.7K]

Answer:

debris basin is you answering.

4 0
2 years ago
How much work does a 30W engine do if it operates for 40 seconds
swat32

Given that :

        Power (P) = 30 W ,

         time (t)     = 40 s,

Work = ?

                   we know that, power is defined as rate of doing work

                   Power = Work ÷ time

                  => Work = Power × time

                                 = 30 × 40

                        <em>      W   = 1200 J</em>

7 0
3 years ago
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