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dexar [7]
4 years ago
11

At a certain location the horizontal component of the earth's magnetic field is

Physics
1 answer:
Katena32 [7]4 years ago
6 0
At a certain location, the horizontal component of the earth’s magnetic field is, due north<span>. A proton moves eastward with just the right speed, so the magnetic force on it balances its weight.

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A small block with mass 0.0400 kg is moving in the xy-plane. The net force on the block is described by the potentialenergy func
OlgaM077 [116]

Answer:

A= 148.92  m/s²

Explanation:

Given that

U(x,y) = (6.00  )x²  - (3.75  )y ³

m= 0.04 kg

Now force in the x-direction

Fx= - dU/dx

U(x,y) = (6.00  )x²  - (3.75  )y ³

dU/dx= 12 x

When x=0.4 m

dU/dx= 12 x 0.4 = 4.8

So we can say that

Fx= - 4.8 N

From Newtons law

F= m a

- 4.8 = 0.04 x a

a = -120 m/s²

Acceleration in x direction ,a = -120 m/s²

In y -direction

F= - dU/dy

U(x,y) = (6.00  )x²  - (3.75  )y ³

dU/dy = 0 - 3.75 x 3 y²

When y = 0.56 m

dU/dy = - 3.75 x 3 x 0.56 x 0.56

dU/dy = - 3.52

So we can say that force in y -direction

F= 3.52 N

F= m a'

3.52 = 0.04 x a'

a'=88.2 m/s²

acceleration in y direction is 88.2 m/s²

The resultant acceleration

A=\sqrt{a^2+a'^2}

A=\sqrt{120^2+88.2^2}

A= 148.92  m/s²

7 0
4 years ago
Suppose you increase the height of the object without changing its depth under water. What will happen to the force due to press
Natali [406]

Answer:Remains same

Explanation:

Given

It is given that the depth is constant and we are only increasing the  height of object submerged in the water

thus Force due to Pressure remains same as this force depends upon the depth of object with respect to free surface of Fluid.

Pressure at a depth h with density \rhoof fluid is given by

P=\rho \times g\times h

and Force=Pressure \times area

8 0
4 years ago
A child has fallen while riding a bike. When should a bystander call 911 ?
kari74 [83]

Answer:

C Or D

Explanation:

The Child Should Get Checked On Before You Call The Police Thought,

4 0
3 years ago
Read 2 more answers
A bug is moving along a meter stick in the negative direction at a constant speed of 0.85cm/s. After 42 seconds have passed the
Agata [3.3K]

Given that,

bug speed, v= 0.85 m/s

time, t =42 s

Final position of bug on meter stick was 27 cm

Starting position of bug on meter stick = ?

Since we know that,

s = vt

s= 0.85*42 = 35.7 cm

this is the distance covered by bug in the given time and velocity.

since the bug is moving in negative direction, starting point will be:

27.0 cm+ 35.7 cm = 62.7 cm

The bugs starting position on meter stick was 62.7 cm.

3 0
4 years ago
(15 points)
vodomira [7]

Answer:

1. Decrease

2. Decrease

3. Stay the same

Explanation:

1. The more predators there are that eat the prey(cricket/frog), the less prey there will be.

2. The more the pollution effects them negatively, the more the population will die off.

3. The decrease of food may kill the population, but the increase of food does not effect the birth rate of the population.

4 0
3 years ago
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