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3 years ago

Light energy with very high amplitude would be perceived as ________.

Physics

2 answers:

s2008m [1.1K]3 years ago

6 0

Answer:

High amplitude is equivalent to loud sounds.

Explanation:

sashaice [31]3 years ago

5 0

Answer:

Brightness.

Explanation:

very bright.

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A proton moves along the x-axis with vx=1.0×107m/s. As it passes the origin, what are the strength and direction of the magnetic

Sunny_sXe [5.5K]

Answer:

Magnetic field will be ZERO at the given position

Explanation:

As we know that the magnetic field due to moving charge is given as

$B = \frac{\mu_0 qv sin\theta}{4\pi r^2}$

so here we know that for the direction of magnetic field we will use

$\hat B = \hat v \times \hat r$

so we have

$\hat B = \hat i \times (\hat i + 0\hat j + 0\hat k)$

so magnetic field must be ZERO

So whenever charge is moving along the same direction where the position vector is given then magnetic field will be zero

3 0

3 years ago

Forces that are equal in size but opposite in direction are ____.

Alchen [17]

Answer: The correct answer is balanced force.

Explanation:

Balanced forces are balanced when the forces are acting equal in magnitude but opposite in direction. The balanced forces will not cause change in the speed of the object.

Unbalanced forces are unbalanced when the forces acting on the object are not equal in magnitude. The combined force is the difference between the forces. It will cause the change in the speed of the body.

Therefore, forces that are equal in size but opposite in direction are balanced.

8 0

3 years ago

Is the box moving at a constant speed? Explain how you know. What does this tell you about the kinetic energy of the system

mars1129 [50]

Answer:

The box is moved at constant speed, then the change in kinetic energy is zero.

Explanation:

Let suppose that box moves at constant speed, meaning that its kinetic energy ( $K$ ), measured in joules, is expressed by the following equation:

$K = \frac{1}{2}\cdot m\cdot v^{2}$ (1)

Where:

$m$ - Mass, measured in kilograms.

$v$ - Speed, measured in meters per second.

If the box moves at constant speed, then we notice that $v_{f}^{2}-v_{o}^{2} = 0$ , therefore, $\Delta K = 0$ . In a nutshell, if the box is moved at constant speed, then the change in kinetic energy is zero.

8 0

3 years ago

The only two forces acting on a body have magnitudes of 20 N and 35 N and directions that differ by 80°. The resulting accelerat

pantera1 [17]

Answer:

b) 2.2 kg

Explanation:

Net force acting on an object is the sum of the two forces acting on the body.

The net force is calculated using the parallelogram law of vectors.

F = $\sqrt{{A^{2}} + B^{2}+2 A B cos \theta}$

Here A = 20 N , B = 35 N and θ =80°

Net Force = F = 43.22 N

Acceleration = a = 20 m/s/s

Since F = ma, m = F/a = 43.22 / 20 = 2.161 kg = 2.2 kg

8 0

3 years ago

The north pole of a bar magnet is rapidly introduced into a solenoid at one end (say A). Which of the following statements corre

krek1111 [17]

Answer:

The correct option is;

(b) The end A of the solenoid behaves like a north pole

Explanation:

According to Lenz's law we have that the induced emf direction in the solenoid due to the rapid introduction of the bar magnet will be such that the electric current induced will have a resultant magnet field that will oppose to the movement of the north pole of the bar magnet that resulted in the magnetic field

Therefore, the opposing magnetic pole to the north pole of a magnet is a north pole and the solenoid end A will act like the north pole.

5 0

3 years ago