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
mr Goodwill [35]
3 years ago
15

Help Plz :) Explain the answer if you can

Physics
1 answer:
Lyrx [107]3 years ago
7 0
Group 1, 2, and 3 are
A. Metals

Group 1: Alkali Metals
Group 2: Alkali Earth Metals
Group 3: Transition Metals
You might be interested in
3. Do Newton's Laws of Motion apply to a Water Spout? If so, how?
PSYCHO15rus [73]
Yes it’s spills out becasue bucket
6 0
3 years ago
If we have less power, we most likely have
katrin [286]
<span>the same amount of work being done over a longer period of time.</span>
3 0
3 years ago
Read 2 more answers
A certain lightning bolt moves 50.0 C of charge. How many units of fundamental charge is this?
liubo4ka [24]
Answer: There are number of electrons.
Explanation:
We are given 50 Coulombs of charge and we need to find the number of electrons that can hold this much amount of charge. So, to calculate that we will use the equation:

where,
n = number of electrons
Charge of one electron =
Q = Total charge = 50 C.
Putting values in above equation, we get:

Hence, there are number of electrons.
7 0
4 years ago
Why are heat transfers associated with phase changes known as latent or "hidden" heats?
pshichka [43]
The best and most correct answer among the choices provided by your question is the first choice or letter A.

Heat transfers associated with phase changes known as latent or "hidden" heats because h<span>eat absorbed or released in a phase change is measured in kJ while temperature is measured in °C.</span>


I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
4 0
4 years ago
A roller coaster starts from rest at its highest point and then descends on its (frictionless) track. its speed is 40 m/s when i
Alenkinab [10]

Given that,

Initial velocity , Vi = 0

Final velocity , Vf = 40 m/s

Acceleration due to gravity , a = 9.81 m/s²

Distance can be calculated as,

2as = Vf² - Vi²

2 * 9.81 *s = 40² - 0²

s = 81.55 m

For half height, that is, s = 40.77m

Vf= ??

2as = Vf² - Vi²

2 * 9.81 * 40.77 = Vf² - 0²

Vf² = 800

Vf = 28.28 m/s

Therefore, speed of roller coaster when height is half of its starting point will be 28 m/s.  

5 0
3 years ago
Other questions:
  • What are the magnitude and direction of the force the pitcher exerts on the ball? (enter your magnitude to at least one decimal
    15·2 answers
  • 4. Both trains speed up all the time.
    14·1 answer
  • What is accommodation in the eye? how are the muscles involved in this process?
    14·1 answer
  • In the earth-moon system the moon orbits the earth. What is the "centripetal" force causing the moon to stay in orbit around the
    14·1 answer
  • A physical science test book has a mass of 2.2 kg what is the weight on mars??? please help
    5·1 answer
  • Which postulate of relativity was supported by the experiments of Michelson and Morley
    13·2 answers
  • At t=0, a stone is dropped from a cliff above a lake; 1.6 s later another stone is thrown downward from the same point with an i
    14·2 answers
  • David is driving a steady 28.0 m/s when he passes Tina, who is sitting in her car at rest. Tina begins to accelerate at a steady
    9·1 answer
  • for every 120 joules of energy input a car waste 85 joules, find the useful energy output of the car?
    10·1 answer
  • Venus has a higher average surface temperature than mercury. why?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!