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sp2606 [1]
3 years ago
13

Which describes the amplitude of a wave? A. the length of a wave from one crest to the next crest B. the height of a wave from i

ts rest position to its crest C. the height of a wave from its crest to its trough D. the length of a wave from its crest to its trough
Physics
1 answer:
posledela3 years ago
5 0
The length of a wave so, therefore its D.
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What the other team has a player in the penalty box and they are down a member, it's called a its a hockey question
Basile [38]

Answer:

a powerplay for the other team, and a penalty kill for the team with the player in the box

Explanation:

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3 years ago
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2. An athlete of average size is hanging from the end of a 20 m long rope, which has a mass of 4 kg and is attached to a hook in
a_sh-v [17]

Answer:

  t = 0.319 s

Explanation:

With the sudden movement of the athlete a pulse is formed that takes time to move along the rope, the speed of the rope is given by

             v = √T/λ

Linear density is

           λ = m / L

           λ = 4/20

           λ = 0.2 kg / m

The tension in the rope is equal to the athlete's weight, suppose it has a mass of m = 80 kg

           T = W = mg

           T = 80 9.8

           T = 784 N

The pulse rate is

          v = √(784 / 0.2)

          v = 62.6 m / s

The time it takes to reach the hook can be searched with kinematics

          v = x / t

          t = x / v

          t = 20 / 62.6

          t = 0.319 s

7 0
3 years ago
A 120 V electric heater draws a current of 14.1 A. What is the resistance, in ohms?
Sav [38]

Answer:

8.5 ohms

Explanation:

from ohms law

V=IR

120=14.1R

divide both sides by 14.1

120/14.1=14.1R/14.1

R=8.5ohms

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3 years ago
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4. With a diameter that's 11 times larger than Earth's, _______ is the largest planet.
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The answer is B.Jupiter

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3 years ago
Choose the correct statement regarding projectile motion in the absence of air resistance. Assume the object is at sea level mov
pishuonlain [190]

Answer:

Explanation:

The magnitude of the acceleration in the x direction is always zero: TRUE.

At the apex, in the y direction the velocity is zero and the accelration is positive. TRUE.

At the apex, in the x direction, the velocity is zero and the acceleration is zero. FALSE. The accelration is zero, but the velocity is the same it had when it was shot.

The magnitude of the velocity in the y direction is always constant. FALSE, it's subject to gravity and it's velocity varies as v=v_0 - 9.81ms^{-2} t

At the apex, in the Y direction, the velocity is negative and the acceleration is zero. FALSE. Velocity is zero, Acceleration is 9.81 ms^{-2}, towards the negative y axis

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3 years ago
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