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AleksandrR [38]
3 years ago
11

1. A soccer ball is kicked at ground level at 30 m/s at an angle of 53° to the horizontal.   a. How far away does it land? b. Ho

w long is it in the air?
Physics
1 answer:
goblinko [34]3 years ago
6 0
<span>  a. How far away does it land?</span>
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The table below shows some common animals and their hearing range in Hertz (Hz). Animal Hearing Range in Rate of Vibrations per
kap26 [50]

Answer:

D

Explanation:

If you list and compare, the elephants hearing range is the closest to a humans.

Humans: 20-20,000

Elephant: 16-12,000

While the others are either too much more or less than a humans.

Bat: 2,000-110,000

Dolphin: 90-105,000

Chicken: 125-2,000

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2 years ago
How is energy transferred throughout the roller coaster
solmaris [256]

Answer:

On a roller coaster, energy changes from potential to kinetic and back again many times over and over the course of the ride. Kinetic energy is energy that an object has because of its motion. All moving objects possess kinetic energy, which is determined by the mass and speed of the object.

Explanation:

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3 years ago
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30. A box with mass 20kg is on a cement floor. The coefficient of static friction between the box and floor is 0.25. A man is pu
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Answer:

84.05

Explanation:

  • F=mg×0.25
  • F=20x9.81×0.25
  • f=49.05N
  • F=35N

F=f+F

F=49.05+35

=84.05

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3 years ago
All are examples of electric forces except _________. A. a neutron pushing on another neutron B. an electron pushing on a proton
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Answer:

A) a neutron pushing on another neutron.

Explanation:

Neutrons have no charge, therefore, there is no electric force among them. Protons and electrons on the other hand do have electric charge (electrons negative charge and protons positive charge) that generate electric forces between them that can be repelling forces (if the charges are of the same sign), or attractive forces (if the charges are of opposite signs).

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A 4-kg block is connected by means of a massless rope to a 2-kg block as shown in the figure. Complete the following statement:
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Less than 0.5, but greater than 0
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