PHYSICS HIGH SCHOOL

A typical mirror in a person's house would be an example of a/an _______ mirror. A. concave
B. convex
C. angular
D. plane

Answers

Answer 1
Answer: A typical mirror in a person's house would be anexample of a/an plane mirror. Lenses and mirrors are different. Lenses is atransparent tool containing two curved surfaces used to refract images – eitherconverge or diverge. Mirrors  on the otherhand, show what the real image is without distortion.
Answer 2
Answer:

Penn Foster Students:  PLane

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a car travelling at 36 km/hr due north turns west in 5 s under constant acceleration and maintains the same speed. the acceleration of the car is
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Which of these types of images is not possible with a diverging mirror? A) an image that is smaller than the object b)a inverted image c)a virtual image d)an image

Dark spots on the photosphere are known asA. the corona.
B. the chromosphere.
C. sunspots.
D. solar wind.

Answers

The dark spots that are found on the photosphere are called sunspots. These are a temporary phenomena and are areas of different temperature compared to the surroundings. Sunspots are at a lower temperature compared to the surrpundings and they are created due to magnetic field flux. They can stay on from a few days to a few months and eventually decay.

C is the right answer

A magnetic field forms around a moving electric charge, resulting in a magnetic field. Which does this describe?

A.
how electric charges can be used to make current flow

B.
how electric charges can be used to create a magnetic field

C.
how a magnetic field can be used to generate an electric current

D.
how a magnetic field can be used to generate electrons

Answers

B.
how electric charges can be used to create a magnetic field 
(how I know, just took it, the test I mean)

Which type of wave carries the most energy?a. low frequency, long wavelength
b. high frequency, short wavelength
c. low frequency, short wavelength
d. high frequency, long wavelength

Answers

B. 
Fun fact: gamma rays have the shortest wavelength and highest frequency in the EM Spectrum. Their high energy levels causes abnormalities in cell division (which is basically known as cancer). Xrays and UV does too so there are safety stuff that goes on with regards to those (like lead shielding for xray scans and sunscreen from UV rays). 

Answer: B: High frequency, short wavelength

Explanation: Well, if its a higher frequency it carries more than a low frequency, and when its a short wavelength, it doesn't take up as much energy for it to move, so it makes it larger amounts of energy, hope this helps!

(x - 4)2 = 36 Which of the following expressions represents the solutions to the given equation?

Answers

X = 22 is what I think.

Which of the following statements describes an anticyclone?a. It is an area of low pressure.
b. It is an area of high pressure.
c. It has air masses that meet and rise.
d. It moves in the direction of the Earth’s rotation.

Answers

b. 
srry for short answer :)

Answer:

b is the appropriate answer

Explanation:

An electrical kettle uses 18A of current to boil 500ml of water. What is the electrical resistance of the kettle in ohms?

Answers


We can't tell from the given information.

Regarding the water, we don't know . . .
-- starting temperature
-- quantity of water
-- time in which the heater boiled it
so we don't know how much heat energy it takes to boil it.

Even if we DID know the total heat energy required, we don't know
the voltage supplied to the kettle's heating coil.  Together with the
current flowing in the heater, we need to know either its resistance
or the voltage across it in order to calculate the rate at which heat
energy is dissipated from the heater.
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