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
il63 [147K]
2 years ago
12

Describe two energy conversions that take place when you warm a cup of cocoa in a microwave oven.

Physics
2 answers:
vampirchik [111]2 years ago
7 0
1.)the microwaves are absorbed by the water molecules in the cocoa. this causes the water molecules to vibrate very fast.

2.)this fast vibration causes the molecules to heat themselves up by means of bumping into each other (friction).
baherus [9]2 years ago
4 0
Electrical energy -> wave energy (microwave)
wave energy -> potential/heat energy (cup of cocoa)
You might be interested in
Where does the kinetic energy come fromwhen you roll down a hill?
Lapatulllka [165]
From the change of GPE into KE. Conservation of energy tells us this.
8 0
3 years ago
(04.03 MC)
serious [3.7K]
I belive what your looking for is oxygen

5 0
3 years ago
Read 2 more answers
Starting at the same time, an arrow and a ball are shot horizontally with a speeds of 50 m/s and 44 m/s respectively from the to
Yuri [45]

Answer:

option D

Explanation:

given.

horizontal velocity of arrow and a ball given as  50 m/s and 44 m/s respectively from the top of a building over flat ground.

In vertical direction, they are both identical

In vertical direction the initial velocity of arrow and a ball  is 0  m/s

Their acceleration due to gravity  is same for both arrow and a ball  9.8 m/s²

they will react bottom at the same time

 time of flight is same for both

now,

In horizontal direction,

distance = speed × time

Since speed is more for arrow, it will travel more horizontal distance  at the same time.

the correct answer is option D

5 0
3 years ago
If an object were released in space far away from planted or stars and given an initial momentum, describe what would happen to
mamaluj [8]
Strange as it may seem, the object would keep moving, in a straight line and at the same speed, until it came near another object. Its momentum and kinetic energy would never change. It might continue like that for a billion years or more.

Have a look at Newton's first law of motion.
7 0
3 years ago
Read 2 more answers
In an old-fashioned amusement park ride, passengers stand inside a 3.0-m-tall, 5.0-m-diameter hollow steel cylinder with their b
lesya692 [45]

Answer:2.55 rad/s

Explanation:

Given

Diameter of ride=5 m

radius(r)=2.5 m

Static friction coefficient range=0.60-1

Here Frictional force will balance weight

And limiting  frictional force is provided by Centripetal force

f=\mu N=\mu m\omega ^2\cdot r

weight of object=mg

Equating two

f=mg

\mu m\omega ^2\cdot r=mg

\omega ^2=\frac{g}{\mu r}

\omega =\sqrt{\frac{g}{\mu r}}

\omega =2.55 rad/sec

8 0
3 years ago
Other questions:
  • A 20 kg truck drives in a circle of radius 4 m at 10m/s. What is the centripetal acceleration of the truck?
    11·1 answer
  • Una cuerda es puesta a vibrar 400 veces en 4 segundos Cual es la frecuencia del sonido emitido?
    7·1 answer
  • What happens during the fourth stage of technological design that is not necessary during the sixth or seventh stages of scienti
    10·2 answers
  • A uniform disk with radius 0.650 m
    5·1 answer
  • On a part-time job, you are asked to bring a cylindrical iron rod of density 7800 kg/m 3 kg/m3 , length 81.2 cmcm and diameter 2
    10·1 answer
  • A fairground ride spins its occupants inside a flying saucer-shaped container. If the horizontal circular path the riders follow
    13·1 answer
  • Determine the location of the center of mass of a "L" whose thin vertical and horizontal members have the same length L and the
    12·1 answer
  • A 300 kg car initially travels with a velocity of 20 m/s to the right. A net force F acts on the car for 5 s, which causes the v
    6·1 answer
  • A child is holding a wagon from rolling straight back down in a driveway that inclined at 20 degree horizontal. if the wagon wei
    8·1 answer
  • Which of the following statements are true of thermal energy and kinetic
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!