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lesya [120]
3 years ago
7

A student slides down a slide at recess. After getting off the slide he goes to cross the monkey bars. As he touches the metal o

f the monkey bars, he gets a shock. How did the electric charge transfer from the slide to his body?
Physics
1 answer:
vaieri [72.5K]3 years ago
4 0
He created static electricity by going down the slide, which was kept in his body and then transferred onto the conductive surface of the monkey bars
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In a game of pool the cue ball is rolling at 2.00 m / s in a direction 30.0° north of east when it collides with the eight ball
victus00 [196]

Answer:

v_{f1}=1.758m/s

v_{f1}=1.758m/s

Explanation:

The collision is elastic so we can use the conservation of momentum

P_i=P_f

m_1*v_1+m_2*v_2=m_1*v_{f1}+m_2*v_{f2}

Describe the motion in axis x'

170g*2.0m/s*cos(30)+156g*0m/s=170*cos(10)*v_{f1}+156g*0m/s

294.44 g*m/s=167.41g*v_{f1}

v_{f1}=1.758m/s

Describe the motion in axis y'

170g*2.0m/s*sin(30)=170g*1.75m/s*sin(10)+156*v_{f2}

v_{f2}=1.55m/s

7 0
3 years ago
What is the speed of a wave if the wavelength is 200 m and the period is 20 s?​
goblinko [34]

Here is your answer

We know that

Velocity = Wavelength/Time period

Here,

Wavelength = 200m

Time period= 20 secs

So,

Velocity= 200/20 m/s

v= 10m/s

HOPE IT IS USEFUL

6 0
3 years ago
A small pebble and one large boulder start at the same height and begin rolling down the side of a mountain. Which object would
vitfil [10]

Answer:

The small pebble

Explanation:

Since the potential energy, P.E lost equals kinetic energy, K.E gained,

P.E = K.E

P.E = mgh = K.E

So, K.E = mgh where g = acceleration due to gravity and h = height of drop

Since h and g are constant

K.E ∝ m

So, the kinetic energy of the object is directly proportional to its mass. Thus, the object with the smaller mass has the lesser kinetic energy.

Since the object with the smaller mass is the small pebble, so the small pebble would have less kinetic energy as it crashes on the road at the bottom of the mountain.

8 0
3 years ago
A baseball rolls along a flat parking lot in a straight line at a constant speed of 3.8 m/s. How
Studentka2010 [4]

This is a uniform rectilinear motion (MRU) exercise.

To start solving this exercise, we obtain the following data:

<h3><u>DATA:</u></h3>
  • V = 3.8 m/s
  • D = ¿?
  • T = 15 sec

To calculate the distance, multiply the speed by the time.

We apply the following formula: d = v * t

We clear our data in the formula:

\bf{d=3.8\dfrac{m}{\not{s}}*15 \not{s} }

\bf{d=57 \ m}

The baseball in 15 seconds will roll a distance of 57 meters.

<h2>{ Pisces04 }</h2>
3 0
2 years ago
Name the type of radiation that links satellite to earth
lianna [129]

Answer: I don't know sorry.

Explanation:

8 0
3 years ago
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