1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alexandra [31]
4 years ago
5

I need help with question 2 and 2 please

Physics
1 answer:
vitfil [10]4 years ago
5 0
Alright here the answer to number 2

You might be interested in
You are pushing a heavy box across a rough floor. when you are initially pushing the box and it is accelerating, (a) you exert a
kodGreya [7K]

The answer is C. If the box is accelerating, that means that the amount of force you are exerting is greater than the force of the box.

3 0
3 years ago
Read 2 more answers
What makes a model not useful?
lina2011 [118]
Answer is b hope this helps
8 0
3 years ago
how does the size of objects impact the pull of gravity between Earth and a baseball thrown into the air
Reil [10]
it's how much it weighs and how much force is pushing on it like a egg if i drop it the weigh can cause it to break and how much force the gravity is pushing on it.
3 0
3 years ago
Read 2 more answers
The core of the Sun has a temperature of 1.5 × 107 K, while the surface of the Sun has a temperature of 4870 K (which varies ove
ololo11 [35]

Answer:

The Sun and planets are shown to the same scale. The small terrestrial planets and tiny Pluto are in the box---the Earth is the blue dot near the center of the box (montage created by Nick Strobel using NASA images).

Size

The Sun is by far the biggest thing in the solar system. From its angular size of about 0.5° and its distance of almost 150 million kilometers, its diameter is determined to be 1,392,000 kilometers. This is equal to 109 Earth diameters and almost 10 times the size of the largest planet, Jupiter. All of the planets orbit the Sun because of its enormous gravity. It has about 333,000 times the Earth's mass and is over 1,000 times as massive as Jupiter. It has so much mass that it is able to produce its own light. This feature is what distinguishes stars from planets.

Composition

What is the Sun made of? Spectroscopy shows that hydrogen makes up about 94% of the solar material, helium makes up about 6% of the Sun, and all the other elements make up just 0.13% (with oxygen, carbon, and nitrogen the three most abundant ``metals''---they make up 0.11%). In astronomy, any atom heavier than helium is called a ``metal'' atom. The Sun also has traces of neon, sodium, magnesium, aluminum, silicon, phosphorus, sulfur, potassium, and iron. The percentages quoted here are by the relative number of atoms. If you use the percentage by mass, you find that hydrogen makes up 78.5% of the Sun's mass, helium 19.7%, oxygen 0.86%, carbon 0.4%, iron 0.14%, and the other elements are 0.54%.

Explanation:

4 0
3 years ago
A system initially has an internal energy U of 504 J. It undergoes a process during which it releases 111 J of heat energy to th
Likurg_2 [28]

Answer:

615 J

Explanation:

internal energy (U) = 504 J

heat lost (q) = 111 J = - 111 J (negative sign is because heat is lost)

work done = 222 J

what is the final energy in the system

total energy = final energy - initial energy

final energy = total energy + initial energy

where

initial energy = 504 J

total energy = 222 - 111 = 111 J

final energy = 504 + 111 = 615 J

6 0
3 years ago
Other questions:
  • What happens when you put a galvanized zinc nail in copper solution for an hour? Does is rust or turn different color? What is t
    12·1 answer
  • Ahmed kept a balloon from his birthday for several days until it began to deflate and slowly sink to the ground. He wondered how
    8·2 answers
  • 2. This diagram represents a top-down view of an experiment on a table. The 250 g and 100 g masses are falling and are pulling t
    15·2 answers
  • A surface receiving sound is moved from its original position to a position three times farther away from the source of the soun
    8·1 answer
  • Why do the giant planets and their moons have compositions different from those of the terrestrial planets?
    6·1 answer
  • PLEASE HELP!! ILL MARK BRAINLYEST!!!
    5·2 answers
  • An object is placed 250 cm in front of a concave circular mirror, and the image of the object also appears at 250 cm in front of
    8·1 answer
  • Please only answer if you are positive. Thanks! Brainliest if correct!
    5·2 answers
  • A 230 kg steel crate is being pushed along a cement floor. The force of friction is 480 N to the left and the applied force is 1
    11·1 answer
  • 4. A plane accelerates down a runway due to the constant resultant force of
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!