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4 years ago

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A truck is moving at a constant speed of 50 m/s. A boy riding in the back of the truck throws a newspaper out the back of the tr

uck at a speed of 20 m/s. What is the speed of the paper relative to someone standing on the roadside?

1 answer:

lbvjy [14]4 years ago

7 0

Answer:

70m/s

Explanation:

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A negative charge feels a force when stationary in an electric field. moving parallel to an electric field. moving parallel to a

Yuki888 [10]

Answer:

<u>stationary in an electric field. </u>

<u>moving perpendicular to a magnetic field.</u>

<u>moving perpendicular to an electric</u> <u>field.</u>

Explanation:

Negative charge: In physics, the term "negative charge" is defined as a phenomenon that consists of a surplus or different electrons in any field i.e magnetic or electric field.

However, the correct answer in the question above, would be:

<u>"stationary in an electric field". </u>

<u>"moving perpendicular to a magnetic field".</u>

<u>"moving perpendicular to an electric</u> <u>field".</u>

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3 years ago

Please please answer this! explain the kinetic molecular theory ( i don't understand how they explain it in my lesson so if some

Bess [88]

Answer:

Explanation:

Basically, Kinetic Molecular Theory says that gas particles are in constant motion and that they show perfectly elastic collisions.

An elastic collision is a collision in which there is no net loss in kinetic energy in the system as a result of the collision.

So the kinetic molecular theory says that gas particles stay moving constantly and don't lose energy when they run into each other.

Hope this helps!

4 0

3 years ago

A force of 30 N is exerted on an object on a frictionless surface for a distance of 6.0 meters. If the object has a mass of 10 k

tangare [24]

Answer:The velocity of the object will be 5 $\sqrt7$ m/s or 13.23m/s

Explanation:

force exerted by the object= 30N

distance displayed by the object by the action of force=6.0m

mass of object=10kg

velocity gained by the object=?

$\frac{1}{2}mv^{2}= forcexdisplacement\\\frac{1}{2}10v^{2} = 30x6\\ 5v^{2}=180\\ v^{2}= 180-5\\ v^{2} =175\\v=\sqrt{175} \\v=5\sqrt{7} or 13.23$

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2 years ago

What element from the periodic table produces blue color in fireworks

sattari [20]

The answer is going to be element #29 Copper makes blue
Red:#38
Green:#56
Pink:#3
Yellow:#11
Gold:#20
Hopes This Helps

4 0

4 years ago

Read 2 more answers

A convex security mirror has a radius of curvature of 12.0 cm. What is the magnification of a pare 3.0 m from the mirror?

Makovka662 [10]

Answer:

magnification will be -0.025

Explanation:

We have given the radius of curvature = 12 cm

And object distance = 3 m

So focal length $f=\frac{R}{2}=\frac{12}{2}=6cm$

Now for mirror we know that $\frac{1}{f}=\frac{1}{u}+\frac{1}{v}$

So $\frac{1}{0.06}=\frac{1}{3}+\frac{1}{v}$

$16.66-0.333=\frac{1}{v}$

v = 0.750 m

Now magnification of the mirror is $m=\frac{-v}{u}=\frac{-0.750}{3}=-0.025$

5 0

4 years ago