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2 years ago

A student tries to measure the period of a pendulum that is already swinging

Physics

1 answer:

Alex17521 [72]2 years ago

5 0

Answer:

a. The student's mistake was that the student did not swing the pendulum and start the watch at the same time.

b. 1.2 s per swing.

c. The likely effect of her reaction time is that they will should subtract two seconds off the time.

Explanation:

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Two long, straight wires both carry current to the right, are parallel, and are 25 cm apart. Wire one carries a current of 2.0 A

Artemon [7]

Answer:

x = 7.14 meters

Explanation:

It is given that,

Current in wire 1, $I_1=2\ A$

Current in wire 2, $I_2=5\ A$

Distance between parallel wires, r = 25 cm

Let at P point the net magnetic field equal to 0. The magnetic field at a point midway between the is given by :

$B=\dfrac{\mu_oI}{2\pi r}$

Let the distance is x from wire 1. So,

$\dfrac{I_1}{r}=\dfrac{I_2}{(0.25-r)}$

$\dfrac{2}{r}=\dfrac{5}{(25-r)}$

$x=\dfrac{50}{7}\ m$

x = 7.14 meters

So, the magnetic field will be 0 at a distance of 7.14 meters from wire 1. Hence, this is the required solution.

6 0

2 years ago

Y=k/x, x is halved.<br> what happens to the value of y

IgorLugansk [536]

Answer:

y is doubled

Explanation:

If x is halved, that means the value is doubled. Here is an exmaple:

y=1/2. If the denominater is doubled, y would equal y=1/1. So, the value of y has doubled from 0.5 to 1. Therefore, if the denominator is halved, the solution will be doubled.

8 0

3 years ago

The moon is always circling around the earth, in a stable orbit. This movement is the reason we see the different phases of the

Darina [25.2K]

The answer would be B. This is because all planets in our galaxy orbit the sun.

3 0

3 years ago

Technician A says that when the MIL is on, the technician should retrieve the DTC and follow the manufacturer's recommended proc

evablogger [386]

Answer:

i think its both A and ab

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2 years ago

HELP! block is released from rest and slides down a frictionless ramp inclined at 30' from the horizontal. When the block reache

Bumek [7]

Answer:

Explanation:

the horizontal and vertical force acting on it consist a net force on the inclined direction (30degrees below the horizontal) you can tell by the length of the horizontal component (try to see the 30degree incline as horizontal, because that's the direction of the displacement). net work done on the system results in an increase in energy. i hope this can help :D, i'm also taking the ap physics 1 exam tommorow.

5 0

2 years ago