PHYSICS HIGH SCHOOL

____________ occurs when an energy source transfers heat directly to another object through space; an example would be an object becoming warm by sitting in the sunshine. a. conduction
c. convection
b. radiation
d. heat

Answers

Answer 1

Answer: the answer is Radiation

Answer 2

Answer:

Answer:

B or the second option (Radiation) for Edg 2020

Explanation:

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If a cart of 4 kg mass has a force of 8 newtons exerted on it, what is its acceleration?
Study the example and choose the influence on perception. Those computer geeks are all the same. They spend all day playing video games and programming their computers to serve them breakfast. I don't think I've ever seen one reading a real book or throwing a baseball. Why, they're almost like machines!a. primacy-recencyb. attributionc. stereotypingd. self-fulfilling prophecy
What are examples or centripetal acceleration?
Pls help me this is being timed. pls.
6. A skydiver jumps out of a plane and reaches a terminal velocity (maximum speed) of 50 m/s after5 seconds. After an additional 10 seconds she opens her parachute and slows down for 2 seconds to a new terminal velocity of 10 m/s. She falls at that speed for 3 seconds before landing on the ground. Sketch the following graphs: Position vs. Time Velocity vs. Time Acceleration vs. Time

What is the charge of the nucleus of an oxygen atom?
0
–2
+8
+16

Answers

The charge will be +8.

How? The atomic number of oxygen is 8 that means that it has 8 protons in it's nucleus. Since each proton has +1 charge on it 8 would have +8.

Answer:

Explanation:

Because the atomic number of oxygen is 8 therefore it will be +8

Which process produces the energy radiated by the star when it becomes a main sequence star?

Answers

The process that produces the energy radiated by stars is nuclear fusion in the core.
For a star on the main sequence, it's the fusion of hydrogen nuclei into helium.

What is the minimum total energy released whenan electron and its antiparticle (positron)
annihilate each other?
(1) 1.64 × 10^–13 J (3) 5.47 × 10^–22 J
(2) 8.20 × 10^–14 J (4) 2.73 × 10^–22 J

Answers

Answer:

(1) $1.64 * 10^(-13) J$

Explanation:

Energy released in this process is given by

$Q = \Delta m c^2$

here we have

$\Delta m = 9.1 * 10^(-31) kg$

since here mass of two electrons converted into energy so we have

$Q = 2(9.1 /times 10^(-31))(3* 10^8)^2$

$Q = 1.64 * 10^(-13) J$

so here energy released is the energy of rest mass energy due to two charges i.e. electrons and positrons

The minimum total energy released when an electron and its antiparticle (positron) annihilate each other is 1.64 x 10⁻¹³ J.

What is the minimum total energy released?

The minimum total energy released when an electron and its antiparticle (positron) annihilate each other is calculated as follows;

E = Δmc²

where;

m is the mass of the two electrons
c is speed of light

E = (2 x 9.11 x 10⁻³¹) x (3 x 10⁸)²

E = 1.64 x 10⁻¹³ J

Learn more about energy here: brainly.com/question/25959744

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Which best describes the big bang theory? A. The universe is 4.6 billion years old. B. The universe is shrinking. C. Our universe is not the only universe. D. The universe is expanding.

Answers

The Big Bang Theory presents an explanation of the origin of the universe and is the most prevailing theory to date. According to the theory, the universe expanded from a state with a very high density which suddenly exploded and hurled matter to all directions. To this day, the expansion of the universe occurs and is supported by tons of evidences.

ANSWER: D. The universe is expanding.

The correct answer is letter D. The best statement that describes the big bang theory is that The Universe is Expanding. This is backed by the Doppler effect. Hope this answer helps! Good luck!

what would be the final temperature of a mixture of 50g water at 20c temperature and 50g of water at 40c temperature?

Answers

Because there is the same amount of water in each sample, the samples have an equal amount of influence over the overall temperature. that means it will be somewhere right in the middle of the two original temperatures. The middle, also the average, of the two samples' temperatures is 30c, meaning that if you combined the 20c water and the 40c water the final result would be 100g of 30c water. If you need some more explanation, just ask.

Can any kind soul help me please