PHYSICS HIGH SCHOOL

In the combined gas law, if the pressure in the system is increased, what happens to the volume?a. The volume decreases.
b. The volume increases.
c. The volume remains the same.

Answers

Answer 1
Answer: pv/t = constant
when t is constant
p increases v must be increase

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A resistor in a circuit dissipates energy at a rate of 1 W. If the voltage across the resistor is doubled, what will be the new rate of energy dissipation?

Answers

The new power dissipation will be 4 watts.

Who was the 1st to use film in intraoral radiography?

Answers

The first dental x-ray film was used by Dr. Frank Vanwoert.

A solid geometric shape formed by a mineral is called

Answers

When a mineral is formed into a geomoetric shaped it is called a crystal

Answer:

Crystal.

Explanation:

Which describes an object’s speed in free fall?

Answers

"Free fall" is the motion of an object when gravity is the ONLY force
acting on it.

In true 'free fall' the speed of an object increases at a constant rate
for the total duration of the fall.  The rate of increase, on or near the
Earth's surface, is 9.8 meters per second for each second of fall.

True free fall is almost impossible to observe in everyday life, because
whenever we see anything falling, it's almost always falling through air,
so gravity is NOT the only force acting on it.  The friction due to the
motion through air works against the gravitational force.  In many cases,
the result is that the object's speed eventually stops increasing and
becomes constant, at a speed often described with the faux technical,
high-fallutin' sounding phrase "terminal velocity".  It must be understood
that 'terminal velocity' is NOT a property of gravity or of free fall, but is
only a result of falling through some surrounding stuff that interferes with
the process of true 'free fall'.
An objects falling speed will increase until it is at what is called terminal velocity, meaning it can't go any faster, it will stay at the same speed, until it hits the ground.

A 1.0 kg ball is thrown into the air with an initial velocity of 30 m/s. What is the kinetic energy of the ball?

Answers

Answer:

If this helps, to work out the kinetic energy the formula is K (stands for kinetic energy) = 1/2 (half of) mass and velocity. So the answer is 450 joules.

Explanation:

If a force of 12 n is applied to an object with a mass of 2kg the object will accelerate at

Answers

Using Newton's second law, F= ma
the acceleration would be>
F=ma
->F/m= a
->12/2= a
->6 = a

therefore acceleration is 6 ms^-2
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