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SashulF [63]
3 years ago
12

the force is found by multiplying the mass of an object by velocity at which it travels. true or false

Physics
1 answer:
Katarina [22]3 years ago
4 0

False.

Force is found by multiplying mass of an object by its acceleration.

F = mass * acceleration

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A) Julie is running to the right at 5 m/s, as shown in the 1st figure. Balls 1 and 2 are thrown toward her at 10 m/s by friends
Svetach [21]

Part 1)

here Julie is running at speed 5 m/s

So here two balls are thrown at speed 10 m/s towards Julie with respect to her friend standing on the ground.

So here this all speed is real speed of all.

Now as per Anita (let say she is one of her friend standing on ground) the speed of two balls will be same as the given speed as she is observing from ground or stationary frame

As per the frame of Julie

speed of ball 1

v_{1j} = v_1 - v_j

v_{1j} = 10 - 5 = 5 m/s towards her in same side

speed of ball 2

v_{2j} = v_2 - v_j

v_{2j} = -10 - 5 = -15 m/s towards her from opposite side

Part b)

Now in this case the speed of two balls is given with respect to Julie

so we can say

for ball 1

v_{1j} = v_1 - v_j

10 = v_1 - 5

so in ground frame speed of ball 1 is

v_1 = 15 m/s

Similarly for ball 2

v_{2j} = v_2 - v_j

-10 = v_2 - 5

So speed in ground frame of ball 2 is

v_2 = - 5 m/s

so its 5 m/s from opposite side

6 0
3 years ago
Explain why the moon is always half illuminated and half dark no matter where it is in the lunar cycle.
BlackZzzverrR [31]
The easiest way I know to explain it is this:

-- Take a flashlight and a ball into a dark room.

-- Turn on the flashlight and point it at the ball.

-- Half of the ball is lighted up by the flashlight, and the other half is dark.

-- There is no way you can turn or twist the ball to make more or less
than 50% of it lighted up and more or less than 50% of it dark.

<em>Everything</em> in the solar system ... as long as it's shaped like a ball ... is
half illuminated by the sun and half dark.
7 0
3 years ago
I love buying physics toys. I recently broke out my new electromagnetic field meter and started playing with it. After turning i
harkovskaia [24]

Answer:

ionized particles from the sun.

* interactions in radiation belts.

* the friction of the planet in the solar wind

q = +9 10⁵ C

Explanation:

Due to being made up of matter, the planet Earth has a series of positive and negative charges, in general these charges should be balanced and the net charge of the planet should be zero, but there are several phenomena that introduce unbalanced charges, for example:

* ionized particles from the sun.

* interactions in radiation belts.

* the friction of the planet in the solar wind

This creates that the planet has a net electrical load

         

We can roughly calculate the charge of the planet

             E = k q / r²

             q = E r² / k

let's calculate

             q = 200 (6.37 10⁶)²/9 10⁹

              q = +9 10⁵ C

3 0
3 years ago
The term solstice translates as "Sun stop." Explain why this translation makes sense from an astronomical point of view. It make
adoni [48]

Answer:

It makes sense because on that the day  the sun stops moving northward and starts moving southward

Explanation:

4 0
3 years ago
Read 2 more answers
A softball has a mass of 0.18 kg. What is the gravitational force on Earth due to the ball, and what is the Earth's resulting ac
alexgriva [62]

Answer:F=1.7802

Explanation:

Since we've been given the mass to be .18kg,we are asked to find the Force of which the formulae is

F=ma where f-force,m-mass and a-acceleration due to gravity

So we can just substitute

F-?.m=.18 and a9.89

F=.18×9.89

F=1.7802N

6 0
2 years ago
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