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
Setler [38]
3 years ago
13

Bolt starts the race not moving, but then increased his speed until he reaches a top speed. Once Bolt reaches his top speed he m

aintains that speed for a few seconds to:
a) move at a constant velocity
b) accelerating by moving faster
c) accelerating by moving slower
Is it a, b, or c?
Physics
1 answer:
ludmilkaskok [199]3 years ago
6 0

Answer:

a) move at a constant velocity

Explanation:

You might be interested in
Which of the following types of technologies has best helped scientists to study very high-energy objects in outer space, such a
erica [24]

Very high-energy objects and events spit out very high-energy photons, so the instrument you need in order to detect them is the       X-ray telescope. <em>(C)  </em>

Inconveniently, X-ray telescopes only work when they're up in orbit, because X-rays get seriously soaked up in Earth's atmosphere, and most of them never make it down to the surface ... (lucky for us !) .

3 0
3 years ago
Read 2 more answers
In a certain time interval, natural gas with energy content of 19000 J was piped into a house during a winter day. In the same t
Tcecarenko [31]

Answer:

The amount of heat transfer is 21,000J .

Explanation:

The equation form of thermodynamics is,

ΔQ=ΔU+W

Here, ΔQ is the heat transferred, ΔU is the change in internal energy, and W is the work done.

Substitute 0 J for W and 0 J for ΔU

ΔQ = 0J+0J

ΔQ = 0J

The change in internal energy is equal to zero because the temperature changes of the house didn’t change. The work done is zero because the volume did not change

The heat transfer is,

ΔQ=Q  (in ) −Q (out )

Substitute 19000 J + 2000 J for Q(in)  and 0 J for Q(out)

ΔQ=(19000J+2000J)−(0J)

=21,000J

​Thus, the amount of heat transfer is 21,000J .

​

8 0
3 years ago
Read 2 more answers
Resonance in air column is used in which of these musical instruments
zvonat [6]

Answer: The correct answer is "trumpet".

Explanation:

Resonance occurs when the applied frequency on the object is equal to the natural frequency of the object.

Wind instruments use resonance in the air column to amplify the sound. It makes the sound louder. Sound is produced by using lips or vibrating reeds or buzzing sound into the mouthpiece.

Therefore, resonance in air column is used in trumpet musical instruments.

7 0
3 years ago
Read 2 more answers
what velocity must a 1340kg car have in order to havw the same momentum as a 2680 kg truck traveling at a velocity of 15m/s to t
kykrilka [37]
Car with a mass of 1210 kg moving at a velocity of 51 m/s.
2. What velocity must a 1340 kg car have in order to have the same momentum as a 2680 kg truck traveling at a velocity of 15 m/s to the west? 3.0 X 10^1 m/s to the west.

Hope i helped
Have a good day :)

 
6 0
3 years ago
What is one suggestion to help ensure a child gets adequate sleep?
ycow [4]
Start a bedtime routine.
Sorry if this is not the answer your looking for
6 0
3 years ago
Read 2 more answers
Other questions:
  • a student pushes a 40 in Block across the floor for a distance of 10 meters how much work was done to move the block A) 4j. B) 4
    5·1 answer
  • What is the effect of pressure on the volume of a gas?
    6·2 answers
  • What minimum speed is required for the ball to clear the 0.90-m-high net about 15.0 m from the server if the ball is "launched"
    6·1 answer
  • An entertainer juggles balls while doing other activities. In one act, she throws a ball vertically upward, and while it is in t
    5·1 answer
  • What does balanced and unbalanced forces have to do with newtons laws of motion
    10·1 answer
  • A solenoid with a ferromagnetic core is called a circuit.
    5·1 answer
  • PLZZ I WILL DO ANY THING
    13·1 answer
  • 20. For each improvement in glider design, engineers follow
    8·1 answer
  • Which list includes the phase changes that require a loss of energy (heat)?
    15·1 answer
  • Pain... physical, mental, emotional?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!