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Naddika [18.5K]
3 years ago
13

A boy does 465 J of work pulling an empty wagon along level ground with a force of 111 N [31o below the horizontal]. A frictiona

l force of 155 N opposes the motion and is actually slowing the wagon down from an initial high velocity. The distance the wagon travels is
Physics
1 answer:
vovikov84 [41]3 years ago
6 0
Can you list the answer's
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if the speed of sound through the air is rounder 80 meters per second what will be the change in temperature of the air​
d1i1m1o1n [39]

hope it is if the speed in air is larger by 80m/s what is change in temperature.

Explanation:

hope this helps you

............

8 0
3 years ago
A 430 g soccer ball lying on the ground is kicked and flies off at 25 m/s. If the duration of the impact was .01 s, what was the
maw [93]
<h2>The average force acting on the ball is 1075 N in the direction of travel of ball.</h2>

Explanation:

Force is given by rate of change of momentum.

Mass of soccer ball = 430 g = 0.43 kg

Initial velocity = 0 m/s

Final velocity = 25 m/s

Change in momentum = 0.43 x 25 - 0.43 x 0

Change in momentum = 10.75 kg m/s

Time taken = 0.01 s

Rate of change of momentum = Change in momentum ÷ Time

Rate of change of momentum = 10.75 ÷ 0.01

Rate of change of momentum = 1075 N

Force = 1075 N

The average force acting on the ball is 1075 N in the direction of travel of ball.

4 0
3 years ago
An architect is redesigning a rectangular room on the blueprints of a house. She decides to double the width of the room, increa
Vladimir79 [104]

Answer:3.6

Explanation:

Given

Architect decide to double the width

length increases by 50 percent

height increases by 20 percent

Let L,B,H be length,height and width of rectangular room

L'=1.5L

B'=2B

H'=1.2H

therefore new volume V'=L'\times B'\times H'

V'=1.5L\times 2B\times 1.2H

V'=3.6LBH

new volume is 3.6 times the original

8 0
3 years ago
A source charge of 5.0 µC generates an electric field of 3.93 × 105 at the location of a test charge. How far is the test charge
kap26 [50]

Answer:

B. )  0.34 m

I definitely guessed and got the right answer so :))

6 0
3 years ago
Read 2 more answers
2. A ladder 16cm long weighs 420N and it's centre of gravity is 7m from one end.It is carried horizontally by two boys,each hold
ipn [44]

Answer:

well the answers are 180 and 240 obviously

Explanation:

Download pdf
8 0
2 years ago
Read 2 more answers
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