PHYSICS HIGH SCHOOL

based on your reading "take a closer look" what can you say about the image that forms on the retina of your eye?

Answers

Answer 1

Answer:

Answer:

The lens of the eye is a convex lens. The image that it forms on the retina is upside down.

Explanation:

The eye makes an image, but it is upside down, the brain corrects the image and turns it right side up

Answer 2

Answer:

Answer:

it is an upside-down image but the brain realizes it and corrects it in its orientation so we see it in right direction.

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The amount of work done by two boys who apply 200 n of force in an unsuccessful attempt to move a stalled car is?
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A small piece of Styrofoam packing material is dropped from a height of 1.90 m above the ground. Until it reaches terminal speed, the magnitude of its acceleration is given by a = g − Bv. After falling 0.400 m, the Styrofoam effectively reaches terminal speed, and then takes 5.40 s more to reach the ground.(a) What is the value of the constant B?s-1(b) What is the acceleration at t = 0?m/s2 (down)(c) What is the acceleration when the speed is 0.150 m/s?m/s2 (down)
Why are gases good at transferring heat through convection?

How does a controlled experiment work?

Answers

A controlled experiment works when an observer tests a hypothesis by looking for changes brought on by alterations to a variable.

The apparent change of frequency of a source of sound due to it me relative motion between the sound and a listener is called the

Answers

That's the "Doppler effect". It's also the operating principle
behind police speed radar.

1. What is meant by half-life?The time for a radioactive sample to reduce to half of its radioactivity.
The time for half of a radioactive sample to decay into new substances.
The time for a radioactive sample to reduce to half of its original mass.
The time for half of a radioactive sample to lose its radioactivity.

4. The isotope uranium-232 has a half-life of 68.9 years. How long will it take for 60% (N/N0 = 0.60) of the original sample to decay?

5.8 years
50.8 years
93.5 years
407 years

5. The isotope barium-133 has a half-life of 10.51 years. Of a 10 kg sample, how much will remain after 50 years?

0.37kg
4.53kg
8.64kg
270kg
6. A piece of bone from a horse found in an archaeological site is dated using carbon-14 dating. It is found that the bone has 78% of the carbon-14 that it would have when the horse was alive. Approximately how long ago did the horse die?

900 years ago
2,000 years ago
14,100 years ago
35,800 years ago
7. At an physics research facility 0.0027 kg of a new isotope is made in an atomic collider. After 6 seconds, 0.00147 kg remain. What is the half-life of the isotope?

0.25 seconds
5.26 seconds
6.84 seconds
500 seconds

Answers

1. The time for a radioactive sample to reduce to half of its original mass.
4. 10% of 232 is 23.2 times 6 equals 139.2
68.9 x6 equals 413.4
5. 0.37kg
6. 2000 years
7. 6.84 seconds

The volume of a gas is 605 liters at 27.0°C. The new temperature is -3.0°C. What is the new volume?-67.2 L
-545 L
-672 L
-5450 L

Answers

According to the Charle's law, the new volume of gas is -545 L when the pressure is constant.

What is Charle's law?

Charles law is an experimental gas law which provides description about the behavior of gases which tend to expand on heating.It states that, at constant pressure, the temperature is in direct proportion with the volume that is,V∝T or V₁/T₁=V₂/T₂.The relation between volume and temperature is linear as the temperature increases volume also increases.

The graph of volume versus temperature is a straight line passing through the origin.It was formulated in the year 1780 by scientist Jacques Charles.

The new volume of gas is obtained by substituting values in the formula V₂=605×(-270)/300=-545 L.

Thus, the new volume of gas is -545 L.

Learn more about Charle's law,here:

brainly.com/question/21184611

#SPJ2

from p1v1/t1 = p2v2/t2
pressure unchanged ... cancelled out
v1=605 , t1=27C = 300K,
t2=-3C = 270K
***remember temperature must be in Kelvin
we got
605/300 = v2/270
v2 = 545

If Earth were twice as far from the sun, the force of gravity attracting the Earth to the Sun would bea. twice as strong
b. half as strong
c. one-quarter as strong.

Can someone explain this one for me ? :)

Answers

one quater as your moving away more!

Water enters a baseboard radiator at 180 °F and at a flow rate of 2.0 gpm. Assuming the radiator releases heat into the room at a rate of 20,000 Btu/ hr., what is the temperature of the water leaving the radiator?