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Nikolay [14]
2 years ago
5

there were 5 seconds left in a basketball game. In order to run out the clock a player threw the ball directly up as hard as he

could. How hard would the player have to throw the ball to make sure that it would not land before time expired? Hint: d= -16t + vt+ h
Physics
1 answer:
spin [16.1K]2 years ago
7 0

Answer:

80

Explanation:

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The X-ray source Cygnus X-1 has a mass of at least 11 solar masses and a diameter of only about one-quarter the diameter of the
SOVA2 [1]

Answer:

Answer is It was deduced from the rate at which it glimmers.

Refer below.

Explanation:

The X-ray source Cygnus X-1 has a mass of at least 11 solar masses and a diameter of only about one-quarter the diameter of the Earth. With such a small diameter it must be a compact object, and with such a large mass it can't be a white dwarf or a neutron star, so a black hole is the only possibility remaining. The diameter of Cygnus X-1 found:

It was deduced from the rate at which it glimmers.

7 0
3 years ago
An element's atomic number is 55. How many protons would an atom of this element have?
AfilCa [17]
The atomic number of an element is the number of protons the element has, so the element with the atomic number 55 has 55 protons.
6 0
3 years ago
Jacob is riding his bike down a tall hill. At the top of the hill, he has 2800J of potential energy. At the bottom of the hill,
elena55 [62]

Answer:

Just find the formula then you can do it

4 0
2 years ago
Read 2 more answers
Which of the following are true about a "simple compressible system"? It cannot be a mixture of different substances (e.g. oxyge
fomenos

Explanation:

The volume of a simple compressible system is not fixed. At a state of equilibrium, there should be uniformity in the entire system.

From the question we have here, these are the correct options:

1. It cannot be a mixture of different substances (e.g. oxygen and nitrogent)

2. It can be composed of any phases of a substance: solid, liquid, and/or gas

3. It's state is specified if given two independent, intensive thermodynamic properties.

4 0
3 years ago
How do professional bicycle riders reduce friction. Name two ways.<br> Thx
wlad13 [49]
A well maintained bicycle is key.  Oil the chain so that it's less likely to get hung up.  It will have a smoother flow.  Another could be in their clothing.  Notice they usually wear good fitting clothing?  I believe the more from fitting pants help clothing friction.  Another way could be keeping the tires well inflated so that the tires aren't dragging.  Rolling along smoothly on properly inflated tires seems like a must.  Get a few more answers along with mine, so that you have a variety to choose from.
4 0
3 years ago
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