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Bond [772]
3 years ago
15

1) The cause of magnetism is

Physics
1 answer:
Cloud [144]3 years ago
7 0

Answer:

I think it's A, I'm not sure though

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You pull a rope to the left with 300n and a friend pulls it the rope to the right with 425n what is the magnitude and direction
eduard

Answer: from vector law opposite we minus

Hence

425n-300n=125n to the right

Hints in left vector have -Ve sign while right have +Ve sign

5 0
3 years ago
INFRARED WAVES
Elena-2011 [213]

Answer:

We have many uses for infrared: night-vision cameras, remote controls, infrared astronomy, and fiber-optic cables. The greenhouse effect is even related to infrared waves because greenhouse gases absorb the infrared emitted by the ground, trapping it on the Earth.

Explanation:

7 0
4 years ago
The center of mass of a 1600 kg car is midway between the wheels and 0.7 m above the ground. The wheels are 2.6 m apart. (a) Wha
user100 [1]

Answer:

Explanation:

I guess we are ASSUMING that this is a rear wheel drive car as a front wheel drive car will never get the front wheel normal force to zero

If we consider it as a statics problem and choose our moment center carefully...say 0.7 m above the rear wheel to ground contact point.

Call the traction force at the rear wheels F

The normal force on the front wheels will be zero, so no moment generated by the front wheels.

Summing moments about our chosen point to zero

1600(9.8)[2.6 / 2] - F[0.7] = 0

F = 291,200

this force will create an acceleration of

a = F/m

a = 291200/1600

a = 182 m/s²

which is about 18.6 times gravity acceleration

3 0
3 years ago
A 500-kg roller coaster car travels with some initial velocity along a track that is 5 m above the ground. The car goes down a s
max2010maxim [7]

Answer: D. 12 m/s

Explanation:

Use the formula of v=\sqrt 2ng then just solve by inserting the numbers.

You use the first mountain height(5) and the second mountain height(12) and insert to the equation.

Sole and you'll be left with 12.

Add the labeling "m/s"

and youre done!

tehe ur welcome vanessaaa

6 0
4 years ago
In an inertial frame of reference, a series of experiments is conducted. in each experiment, two or three forces are applied to
seraphim [82]
The objects will remain at rest if net force acting on it is zero if their magnitude is same and they are acting in opposite direction then according to Newton's 2nd law the net force acting on the system is zero. Since the net force on the system is zero, the object will remain at rest.
8 0
3 years ago
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