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
Arada [10]
4 years ago
15

Choose all the answers that apply. Which of the following forces require physical contact? tension, air resistance, friction, ma

gnetic force, applied force
Physics
1 answer:
svet-max [94.6K]4 years ago
8 0

Answer:

I belive it would be friction applied force and tension

Explanation:

You might be interested in
Two astronauts are floating close to each other in space. Can they talk to each other without using any special device? plsss he
storchak [24]

Answer:

no they can't talk to each other bcoz of the lack of atmosphere.

Explanation:

l hope it helps you

5 0
3 years ago
Eva is in a closed, dark room. She uses her arm muscles to turn on a lamp. When she moves her hand closer to the lamp, the light
12345 [234]

Well, we know that the total energy in a closed system remains constant.

The problem with the story of Eva is that she is not in a closed system. 
If the dark room were really a closed system, then she could press the
button or turn the switch all day, and the lamp could not light.  It needs
electrical energy coming in from somewhere in order to turn on.

Let's say that Eva used her arm muscles to strike a match and light the
candle on the table.  Then we would have have food energy, muscle
energy, chemical energy in the match, chemical energy in the candle,
heat and light energy coming out of the candle, heat energy soaking into
her hand, light energy bouncing off of the book and into her eyes ... all
going on during the story, and the sum total of all of them would remain
constant.
4 0
4 years ago
Read 2 more answers
Studying more difficult subjects first is an effective study habit because
omeli [17]

Answer:

easier topics require less time to review

Explanation:

7 0
3 years ago
A 0.2 kg plastic cart and a 20 kg lead cart both roll without friction on a horizontal surface. Equal forces are used to push bo
Fynjy0 [20]

Answer:

Equal

Explanation:

The impulse theorem states that the impulse exerted on each cart is equal to the change in momentum of the cart:

I=\Delta p=p_f -p_i

where

I is the impulse

pf is the final momentum

pi is the initial momentum

The impulse is equal to the product between the force applied and the contact time:

I=F\Delta t

In this case, the force applied to the two carts (F) is the same, and the contact time (\Delta t) is the same as well. Therefore, the impulse exerted on the two carts is the same.

Moreover, the initial momentum of the two carts is also the same (zero, because they start from rest: p_i=0). So the formula becomes

p_f = I

And since I is the same for the two carts, the final momentum (p_f) will also be equal.

7 0
3 years ago
How do microwaves use the behavior and characteristics of the electromagnetic wave to function?
serg [7]

Answer:

Radiation moves out of the microwave into waves causing heat.

Explanation:

Inside your microwave oven, electrical energy is transformed into EM energy in the magnetron. When the microwave photons interact with food, food molecules are physically agitated, transforming the EM energy into kinetic energy, or energy of movement   .

Hope it helped!

6 0
3 years ago
Other questions:
  • A girl sitting on a merry-go-round moves counterclockwise through an arc length of 3.15 m.
    8·1 answer
  • What is the momentum of an object that is moving in a straight line at a speed of 10 m/s and has a mass of 10 kilograms?
    7·1 answer
  • On Mars gravity is one-third that on Earth. What would be the mass on Mars of a person who has a mass of 90 kilograms (kg) on Ea
    11·1 answer
  • A wave which needs a medium (solid, liquid, gas) in order to propagate itself.
    6·1 answer
  • A proton is placed in an electric field of intensity 700 N/C. What are the magnitude and direction of the acceleration of this p
    7·1 answer
  • A_ is a cut made through the wood
    11·2 answers
  • Choose all the answers that apply.
    12·2 answers
  • A body is under the action of two forces 7 newton and 10 newton. Find the resultant of the two forces if the forces are parallel
    5·1 answer
  • Donny, who has a mass of 75.0 kg, is riding at 25.0 m/s in his truck when he suddenly slams on the brakes to avoid hitting a squ
    14·1 answer
  • Why dose a hot air balloon float
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!