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
serious [3.7K]
3 years ago
11

Which of the following statements is true?

Physics
1 answer:
fenix001 [56]3 years ago
4 0

Answer:Light (electromagnetic) energy does not require a medium through which to travel.

Explanation:

Electromagnetic waves doesnt need to medium for travell

Ex ; Ultra violet rays , X rays

Sound waves needs to medium to travell but electromagnetic waves doesnt

Electromagnetic waves are constructed due to perpendicular electric field and magnetic field

Application of electromagnetic waves

Visible rays helps to see anything

IR rays is used in medical industry for cancer treatment

You might be interested in
Sum up in a few sentences what did Cavendish discover and how did he do it?
exis [7]
He was a British philosopher, and an important experimental and theoretical chemist. He is known for his discovery of hydrogen. He at that time called it "inflammable air".
8 0
3 years ago
Ahmad is riding his bicycle. He finds that he can accelerate from rest at 0.44 m/s^2 for 5 s to reach a speed of 2.2 m/s. The to
snow_lady [41]

Answer:

1) The force Christian can exert on his bicycle before picking up the the cargo is 529.74 N

2) The force Christian can exert on his bicycle after picking up the the cargo is 647.46 N

Therefore, Christian has to exert more force on his bike after picking up the cargo

Explanation:

The given parameters are;

The mass of Christian and his bicycle = 54 kg

The mass of the cargo = 12 kg

1) The force Christian can exert on his bicycle before picking up the the cargo = Mass of Christian and his bicycle × Acceleration due to gravity

∴ The force Christian can exert on his bicycle before picking up the the cargo = 54 kg × 9.81 m/s² = 529.74 N

2) The force Christian can exert on his bicycle after picking up the the cargo = (54 + 12) kg × 9.81 m/s² = 647.46 N

Therefore, Christian has to exert more force on his bike after picking up the cargo.

7 0
2 years ago
Prove that the unit of area derived quantities are derived units​
frozen [14]

answer: derived physical quantities are those quantities that are obtained from the basic physical quantities by multiplication or division and area is one of them

8 0
3 years ago
1. What are 3 main categories of waste and what is the largest contribution of municipal solid waste?​
Tasya [4]
Organic materials continue to be the largest component of MSW. Paper and paperboard account for 27 percent and yard trimmings and food account for another 28 percent. Plastics comprise about 13 percent; metals make up 9 percent; and rubber, leather, and textiles account for 9 percent.
5 0
3 years ago
What is something the screw can do that the other simple machines can't
Naya [18.7K]

Geometrically, a screw can be viewed as a narrow inclined plane wrapped around a cylinder. Like the other simple machines a screw can amplify force; a small rotational force (torque) on the shaft can exert a large axial force on a load.

3 0
2 years ago
Other questions:
  • A square coil (length of side = 24 cm) of wire consisting of two turns is placed in a uniform magnetic field that makes an angle
    15·1 answer
  • Which of the following statements CANNOT be supported by Kepler's laws of planetary motion?
    14·2 answers
  • The volume of a gas is 605 liters at 27.0°C. The new temperature is -3.0°C. What is the new volume?
    8·2 answers
  • A small sphere of mass m is launched horizontally over a body of water from a height h above the water and with a launch speed v
    15·1 answer
  • What will the skydivers ke be when he land on the groun
    7·1 answer
  • What is one common product use microwaves<br><br><br><br> dont have much timeee
    10·1 answer
  • Two bodies made of the same material have same external dimension and appearance, but one is compact solid and other is hollow.
    13·1 answer
  • Give an example of a physical entity that is quantized. State specifically what the entity is and what the limits are on its val
    15·2 answers
  • An apple contains 165 Calories. How many actual calories does it contain? How many joules does it contain
    6·1 answer
  • Sentences about energy giving food?​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!