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Brut [27]
4 years ago
11

What causes air resistance when it comes to parachutes? Use ideas about particles in your answer.

Physics
1 answer:
Kobotan [32]4 years ago
6 0

Answer:

When a parachute opens, it is a second force that works against gravity. This is air resistance. Air collects under the fabric parachute, pushing it up as gravity pulls the heavy object attached to it down. This pushing slows the fall of the object by resisting the air under the parachute.

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You lift a bowling ball with your hand, accelerating it upward. What are the forces on the ball and on what objects are they exe
Snowcat [4.5K]

Answer:

Explanation:

When we lift a ball with the hand the forces experienced by the ball is  

  • Force of your hand
  • Gravitational force

Resultant of these forces gives acceleration to the ball

While your hand exerts a force on the ball, the ball will also exert a force of equal magnitude but opposite in direction to the force by hand.

All these forces is exerted on the ball, hand or on the earth.

7 0
4 years ago
The acceleration due to gravity on Mars is 3.60 m/s2. if this is measured at a distance of 3.4 x 10^6 m from the center of the p
densk [106]

As we know that acceleration due to gravity is given by

g = \frac{GM}{r^2}

here we know that

g = 3.60 m/s^2

M = ?

r = 3.4 \times 10^6 m

now we have

3.60 m/s^2 = \frac{(6.67 \times 10^{-11} Nm^2/kg^2)(M)}{(3.4 \times 10^6)^2m^2}

M = 6.24 \times 10^{23} kg

so above is the mass of Mars

8 0
3 years ago
Which of these is emitted during beta decay ?
satela [25.4K]

Answer:

C. a small charged particle.

Explanation:

typically beta radiation emits an electron which is a small negativity charged particle.

hope it helps. :)

4 0
3 years ago
Read 2 more answers
The table below shows 4 examples of pairs of objects, their masses, and the distance between them. In which example is the gravi
svp [43]

Answer:

example two

Explanation:

They have the greatest masses and close proximety relative to the rest, (If you have two black holes each with a solar mass only 1 mile away from one another, they will be highly atracted and probly

orbit each other once a second or so. But now lets try to put the earth and moon one half mile away from each other, they orbit each other much much slower then the two black holes, its becuase the gigantic mass of the black holes overwalms the closser distance between earth and the moon

Have a great day,

enjoy life.

3 0
3 years ago
To understand the photoelectric effect physiciests should view light as having what type of properties?
fenix001 [56]

Answer:

Particle

Explanation:

To understand photoelectric effect the physicists has to view light as a particle and not wave. The wave nature of the light could not explain the phenomenon of photoelectric effect.

Photoelectric effect is emission of electrons from a material when electromagnetic radiation(Light) is incident on it. These emitted electrons are called photoelectrons.

The explain this effect Einstein proposed that beam of light is can not be a wave propagating through space, but a swarm of discrete energy packets, called as photons.

5 0
3 years ago
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