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
Tema [17]
3 years ago
15

Which statement is true about unltraviolet waves? They are

Physics
1 answer:
sp2606 [1]3 years ago
7 0
Need to see the statements mentioned in the q posted.
You might be interested in
A visitor to the observation deck of a skyscraper manages to drop a penny over the edge. As the penny falls faster, the force du
pentagon [3]
If a coin is dropped at a relatively low altitude, it's acceleration remains constant. However, if the coin is dropped at a very high altitude, air resistance will have a significant effect. The initial acceleration of the coin will be the greatest. As it falls down, air resistance will counteract the weight of the coin. So, the acceleration will decrease. Although the acceleration decreases, the coin still accelerates, that is why it falls faster. When the air resistance fully counters the weight of the coin, the acceleration will become zero and the coin will fall at a constant speed (terminal velocity). So, the answer should be, The acceleration decreases until it reaches 0. The closest answer is.
a. The acceleration decreases.
8 0
3 years ago
Read 2 more answers
If you started the motor of a boat in the middle of a lake, who would detect the sound of the motor first: a friend sitting on t
ArbitrLikvidat [17]

Answer:

A friend snorkeling just below the surface of the water along the same shore will detect the sound first.

Explanation:

  • The speed of sound in water medium is faster than that through the air.
  • Sound propagates through the medium by transferring through the molecules on it. Water has more closely packed molecules due to which the speed is faster.
  • In fact, the sound's speed in water is almost four times faster than that in the air.
  • So the guy in the water surface gets to hear sound faster than the one in sore.
6 0
3 years ago
Read 2 more answers
ANSWER NOW!!!! IF CAN
liberstina [14]
Is this practically possible? How can a 100kg man fly? Hahaha
3 0
3 years ago
4-7 Please! This is about scientific experiments.
ladessa [460]
Number 4 is c ,  number 5 is a  ,  number 6 is d and 7 is a 
8 0
3 years ago
The solid rod shown has a radius of 0.75 in. if it is subjected to the force the 500lb determine the max normal stress developed
Kipish [7]
The normal stress follows the formula written below:

σ = F/A

There are two types of stress, axial and tangential. Since we are only given with the dimension of the radius (and not the length), the possible stress is axial. So, the area is,

A = πr² = π(0.75 in)² = 1.767 in²

So,
σ = F/A = 500 lb/1.767 in² = <em>282.94 psi</em>
7 0
3 years ago
Other questions:
  • a model rocket flies horizontally off the edge of a cliff at a velocity of 40.0m/s. if the canyon below is 110.0m deep, how far
    14·1 answer
  • What are muons in cosmology ​
    15·1 answer
  • Please help asap. I'm terrible with atoms
    13·2 answers
  • The earth takes 1 year to revolve around the sun at 1 A.U. distance (an astronomical unit = 93,000,000 miles). If a planet were
    13·1 answer
  • In the oscillating spring ball system, what is true about the energy of the ball when it is located at its amplitude? Select the
    7·1 answer
  • A space transportation vehicle releases a 470-kg communications satellite while in a circular orbit 350 km above the surface of
    7·1 answer
  • When is a train on Earth in motion relative to the sun? A It is relative to the sun only when the train is not moving. B It is n
    13·1 answer
  • What is the electric potential 4.20 m from a -3.37*10^-6 C charge?
    9·2 answers
  • Godric and Savos are a few meters apart, at one end of the football field. Peter is at the other end of the field. Godric and Sa
    8·1 answer
  • Explain the changes in energy as a ball is held in the air , and then dropped​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!