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
Strike441 [17]
3 years ago
6

What is the difference between a chemical change and a physical change? *

Physics
1 answer:
slavikrds [6]3 years ago
7 0

Answer:

I do belive that it is B hrs cn I an gn

You might be interested in
Wil-E-Coyote drops a bowling ball off a cliff to try to catch the Roadrunner. The cliff is
PtichkaEL [24]

Answer:

t = 5.19 s

Explanation:

We have,

Height of the cliff is 132 m

It is required to find the time taken by the ball to fall to the ground. Let t is the time taken. So, using equation of kinematics as :

y=ut+\dfrac{1}{2}gt^2\\\\\text{since}\ u=0\\\\y=\dfrac{1}{2}gt^2\\\\t=\sqrt{\dfrac{2y}{g}}\\\\t=\sqrt{\dfrac{2\times 132}{9.8}}\\\\t=5.19\ s

So, it will take 5.19 seconds to fall to the ground.

8 0
3 years ago
If a roller coaster train has a potential energy of 1,500 J and a kinetic energy of 500 J as it starts to travel downhill, its t
Lina20 [59]
E_{total} = KE + PE \\ KE = 500 J \\ PE = 1500 J \\ E_{total} = 500J + 1500J \\ E_{total} = 2000J
4 0
3 years ago
Read 2 more answers
CAN SOMEONE PLEASE HELP ME
s2008m [1.1K]
The answer should be B
5 0
3 years ago
Which statement BEST describes acceleration?
Mashutka [201]
C) Acceleration is the rate of change of velocity of an object. Velocity is the speed and direction of an object so acceleration is used to describe the rate of change. I hope this helps!!
3 0
3 years ago
Why is velocity and not just speed important to these pilots
Alborosie
Velocity is a vector. Therefore, it depends on the direction. Pilots need to know the direction of wind, not just the speed. If the pilot is going South, and there's 5 mph wind going South, they'll be happy, but if the wind is going 5 mph North, they'll be going against the wind.
7 0
3 years ago
Other questions:
  • Joe follows the procedure below to make a compass.
    9·2 answers
  • The soccer player is running at a speed of 4m/s when he slides on the ground, coming to a stop distance of 2m. What is the accel
    14·1 answer
  • What happens to air as it warms ,expands and become less dense
    7·1 answer
  • This is a machine that converts electrical energy into mechanical energy.
    6·1 answer
  • A disk with a rotational inertia of 2.5 kg-m2 and a radius 1.1 m rotates on a frictionless fixed axis perpendicular to the disk
    14·1 answer
  • I WILL MARK YOU TOP IF YOU HELP ME I NEED THIS ASAP!!!!
    9·1 answer
  • Why is cellular respiration essential for homeostasis? (4 points)
    12·2 answers
  • Select the correct answer. What happens to the molecules within a gas when the gas condenses?
    7·1 answer
  • Please Help!! I'm timed!!
    5·2 answers
  • Auto companies frequently test the safety of automobiles by putting themthrough crash tests to observe the integrity of the pass
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!