PHYSICS HIGH SCHOOL

What is the main function of a telescope?It brings scientists closer to distant objects.

It magnifies light received from distant objects.

It measures the temperature of distant objects.

It measures the wavelengths of incoming light rays

Answers

Answer 1

Answer:

Explanation :

Telescope is an instrument which is used to magnify distant objects bright, consistent and large.

The function of an ideal telescope must be :

Magnification
Resolution
Power of gathering of light

There are many types of Telescope like:

X ray telescope
Optical telescope
Ultraviolet telescope etc

Hence, the correct option is (b) " It magnifies light received from distant objects ".

Answer 2

Answer: It magnifies light received from distant objects.

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For safety concerning a curve, you shouldA. Decelerate before the curve B. Accelerate before entering the curve C. Applying the brakes only after exiting the curve D. Apply the accelerator throughout the entire curve
If light photons are massless then why are they attracted by black holes?
A stack of books is sitting on a table. Which force is pulling downward on it?
What is a quantity Described completely by its magnitude
Polychlorinated biphenyls (PCBs) have been banned because they are an environmental hazard. Which of the following was NOT a reason for banning them?

The waste products of a nuclear fission powerplant can best be described asa. Small in quantity and not very dangerous.
b. Large in quantity and not very dangerous.
c. Large in quantity and very dangerously radioactive. Eliminate
d. Small in quantity and very dangerously radioactive.

Answers

The answer is D. small in quantity and very dangerously radioactive.

a.

-> the products are stable atoms with a much lower atomic number. For example, Uranium 238 commonly breaks down into strontium and xenon, both of which are stable and non-radioactive.

They are also low in quantity because of the precision involved in breaking down a large atom via neutron capture means that few fission reactions take place.

Hope I helped :)

Source: I studied nuclear physics in year 11

Which statement correctly describes the gravitational potential energy of the pendulum based on this diagram? A.
It is greatest at 25% of the period length.
B.
It is greatest at the point where the arm meets the pivot point.
C.
It is greatest when the bob is at its maximum amplitude.
D.
It is greatest when the bob is in the rest position.

Answers

I think it's 'C' but I won't know for sure until you let me see the diagram.

The core muscles stabilize and protect the spine.

Answers

True. yes the core muscles stabilize and protect the spine.

the answer will be true

A stone is thrown straight up from the roof of an 80 ft building. the height, in feet, of the stone at any time t, in seconds, measured from the ground is given by ℎ(????) = −16???? 2 + 64???? + 80. what is the maximum height the stone reaches?

Answers

Answer:

144 ft

Explanation:

h(t) = -16t² + 64t + 80

The maximum height is at the vertex. We can find the vertex of a parabola using -b / (2a):

t = -64 / (2×-16)

t = 2

The vertex is at 2 seconds. The height of the stone at this time is:

h(2) = -16(2)² + 64(2) + 80

h(2) = 144

The maximum height is 144 feet.

The main difference between speed and velocity involves A. gravity.
B. distance.
C. weight.
D. direction.

Answers

Velocity is speed AND its direction.

The Correct answer to this question for Penn Foster Students is: Direction

Ideally, when a thermometer is used to measure the temperature of an object, the temperature of the object itself should not change. However, if a significant amount of heat flows from the object to the thermometer, the temperature will change. A thermometer has a mass of 33.0 g, a specific heat capacity of c = 804 J/(kg C°), and a temperature of 15.4 °C. It is immersed in 149 g of water, and the final temperature of the water and thermometer is 56.0 °C. What was the temperature of the water in degrees Celsius before the insertion of the thermometer?