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bearhunter [10]
4 years ago
10

The diagram shows two dodgeballs colliding. The red arrow shows the direction of force of the moving ball striking a stationary

ball. Which arrow shows the direction of the force exerted by the stationary ball on the moving ball?

Physics
2 answers:
Helen [10]4 years ago
5 0

Answer:

The second arrow from the top to the bottom

Explanation:

This can be explained by the Newton's third law.

For every action there is an equal and opposite reaction.

When an object A exert a force to an object B. Then object B also excerts a force with the same size but opposite direction to object A.

gtnhenbr [62]4 years ago
4 0

Answer:

Second arrow from the top.

Explanation:

The diagram shows two dodge balls colliding. The red arrow shows the direction of force of the moving ball striking a stationary ball. We need to shows the direction of the force exerted by the stationary ball on the moving ball.

We know that every action have equal and opposite reaction. If the red arrow strikes the stationary ball, it will move in the direction of red arrow. So, the second arrow from the top will be direction of the moving ball.

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A bar of silicon is 4 cm long with a circular cross section. If the resistance of the bar is 270 ω at room temperature, what is
vova2212 [387]

solution:

consider the following data\\
length of slicon bar with circular cross section is 4cm or 0.04m\\
at room temperature resistance of the slicon bar is 270\Omega \\
represent the resistance in mathematical from\\
r=p\frac{1}{A}---1\\
where r is resistance and l is the length \\
A is cross sectional area\\
it is clear that resistivity of the silicon meterial is 6.4\times^2 \Omega.m\\
substitute 6.4\times10^2 for p,270\Omega for R and 0.04m for l i equation (1).\\270=(604\times10^2)\frac{0.04}{A}\\
rewrite the equation\\
a=(6.4\times10^2)\frac{(0.04)}{270}\\
=0.9481m^2\\
write the formula for the circular cross sectional area of silicon bar.\\
A=\pi r^2\\
substitute 0.9481 for A in the above equation\\
\pi r^2=0.9481
r^2=\frac{0.9481}{3.14},since \pi =3.14\\
0.30194\\
further simplified\\
r^2=0.30194\\
\sqrt{0.30194}\\
\cong 0.1509m\\
\cong 150.1mm

7 0
4 years ago
A student decides to spend spring break by driving 50 miles due east, then 50 miles 30 degrees south of east, then 50 miles 30 d
stira [4]

Answer:600 miles, 12

Explanation: The movement described in the question exhibits that of a polygon. Exhibiting a constant distance and angle with only varying direction until the starting point is reached.

The sum of exterior angles of a polygon = 360 degrees.

Exterior angle of a polygon = (360 ÷ number of sides)

Therefore,

Number of sides = 360 ÷ exterior angle

Exterior angle = 30 degrees

Hence,

Number of sides = 360 ÷ 30 = 12 sides

Since distance traveled of 50 miles is the same for each displacement ;

Total displacement = distance traveled * number of sides

Total displacement = 50 * 12 = 600 miles.

5 0
4 years ago
A hockey puck is hit so that it leaves the stick at 50.4m/s. If it takes 0.25 s for the puck to hit the boards, how far is the p
notka56 [123]
Speed = 50.4 m/s
Time = 0.25 s

Distance  =  (speed) x (time)  =  (50.4 m/s) x (0.25 s)  =  12.6 meters.
3 0
3 years ago
Samara stands on the ground. Gravity is applying a force to pull
sineoko [7]

Answer:

action reaction

Explanation:

newtons third law

3 0
3 years ago
You walk with a velocity of 2 m/s north. You see a man approaching you, and from your frame of
solong [7]

Answer:

The velocity of the man from the frame of  reference of a stationary observer is, V₂ = 5 m/s

Explanation:

Given,

Your velocity, V₁ = 2 m/

The velocity of the person, V₂ =?

The velocity of the person relative to you, V₂₁ = 3 m/s

According to the relative velocity of two

                                V₂₁ = V₂ -V₁

∴                               V₂ =  V₂₁ + V₁

On substitution

                                 V₂ = 3 + 2

                                      = 5 m/s

Hence, the velocity of the man from the frame of reference of a stationary observe is, V₂ = 5 m/s

8 0
3 years ago
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