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
BARSIC [14]
2 years ago
7

Pls answer this

Physics
1 answer:
igor_vitrenko [27]2 years ago
6 0

Answer:

37.8225 J

Explanation:

kinetic energy = 1/2 of mass x velocity^{2}

You might be interested in
An electric heating element is connected to a 110 V circuit and a current of 3.2 A is flowing through the element. How much ener
UkoKoshka [18]

Power (rate of using energy) = (voltage) x (current)

Power of this heating element = (120 V) x (3.2 A) = 384 watts


The easy way:

     384 watts = 0.384 kilowatt

     (0.384 kilowatt) x (5 hours) = 1.92 kilowatt-hour


Another way:
     
                            384 watts = 384 joules per second .

        (384 joule/sec) x (3600 sec/hour) x (5 hours)  

=      (384 x 3600 x 5) (joules)  =  6,912,000 joules.

6 0
3 years ago
Read 2 more answers
What kinds of space and matter can light travel through
dem82 [27]

Answer:

Light travels as a wave. But unlike sound waves or water waves, it does not need any matter or material to carry its energy along. This means that light can travel through a vacuum—a completely airless space. (Sound, on the other hand, must travel through a solid, a liquid, or a gas.)

Explanation:

3 0
3 years ago
Read 2 more answers
I really need help like a lot I only got 2 days so I need help, and the answer has to be right, please!
koban [17]

Answer:

1. Wave period = 0.962 s

2. Will absorb red and blue and reflect green

Explanation:

1.

The wave period is:

T = \frac{\lambda }{v} \\Where: \\T: Wave period \\ \lambda : Wavelength \\v: velocity

Wavelength is the distance between crests. So replacing the given information:

T = \frac{2.50}{2.60} = 0.962 s\\

2. In simple words the color of an object is the light it reflects. A green object reflects green light, and the rest is absorbed (red and blue).

7 0
3 years ago
Read 2 more answers
Pls ans 10 no. From laws of motion
Vlad1618 [11]

Answer:

40N

Explanation:

Since both weights are connected to one string, you can say that the tensions above each are equal to each other.

If you do the sum of forces for the 4kg mass, then the tension comes out to 40N (if we take gravity to be 10m/s²). But that seemed too good to be true, so I decided to do the work for the 7kg mass as well [which included finding the normal force (N) and plugging it into the sum of forces for the 7kg mass] to find that it also gives 40N as the answer.

If I were to put my process into steps:

  1. Write out the sum of Forces for both masses
  2. Set them equal to each other to find normal force (because this is the only unknown)
  3. Calculate and compare the two tensions to see if they are equal

*This all seems to line up perfectly, but do let me know if my answer doesn't match up with what you might find to he the answer later on.

4 0
3 years ago
Explain what kind of heat transfer occurs when you burn yourself on a hot car seat in the summer.
liubo4ka [24]
Conduction is a mode of transfer of heat there
6 0
3 years ago
Other questions:
  • During the winter, what type of precipitation would most likely fall in New York, with temperatures averaging 32 F?
    15·2 answers
  • What effect does freezing water into a ice cube have on its mass
    12·1 answer
  • Represent 8953 ms with Sl units having an appropriate prefix Express your answer to four significant figures and include the app
    7·1 answer
  • PLEASE HELP!!!!!! the independent variable is associated mainly with? A. control and experimental groupsB. the treatment that th
    6·2 answers
  • A 1,800 kg car is parked on a road that has an elevation level of 7°. Suppose the coefficient of static friction is .65. What is
    6·1 answer
  • I NEED THE ANSWER QUICK PLEASEE
    10·1 answer
  • In which case would electrical potential energy be built up and stored in the electric field?
    13·1 answer
  • A 250 kg engine block is being dragged across the pavement by a sturdy chain with a tension force of 10,000 N, as seen in the fr
    11·1 answer
  • 60 POINT!!!!!!
    12·2 answers
  • A car bounces up and down on its springs at 1.0 Hz with only the driver in the car. Now the driver is joined by four friends. Th
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!