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
Mashcka [7]
2 years ago
5

Please answer all questions COMPLETELY!! I NEED IT ASAP!!!​

Physics
1 answer:
wel2 years ago
6 0

Answer:

bdbdbdbdbdbdbdbdbdbdbdbdbdbdbdbd

Explanation:

ddvrrbbrbrbddddbdbddbd

You might be interested in
A ball is thrown straight up with a speed of 30 m/s, and air resistance is negligible. How long does it take the ball to reach t
PolarNik [594]

Answer:

3 seconds

Explanation:

Applying,

Applying,

v = u±gt................ Equation 1

Where v = final velocity, u = initial velocity, t = time, g = acceleration due to gravity.

From the question,

Given: v = 0 m/s ( at the maximum height), u = 30 m/s

Constant: g = -10 m/s

Substitute these values into equation 1

0 = 30-10t

10t = 30

t = 30/10

t = 3 seconds

6 0
3 years ago
The specialty of an athlete on the women's track team is the pole vault. She has a mass of 48 kg and her approach speed is 8.9 m
Lyrx [107]

Answer:

H = 3.9 m

Explanation:

mass (m) = 48 kg

initial velocity (initial speed) (U) = 8.9 m/s

final velocity (V) = 1.6 m/s

acceleration due to gravity (g) = 9.8 m/s^{2}

find the height she raised her self to as she crosses the bar (H)

from energy conservation, the change in kinetic energy = change in potential energy

0.5m(V^{2} - [test]U^{2}[/tex]) = mg(H-h)

where h = initial height = 0 since she was on the ground

the equation becomes

0.5m(V^{2} - [test]U^{2}[/tex]) = mgH

0.5 x 48 x (1.6^{2} - [test]8.9^{2}[/tex]) = 48 x 9.8 x H

-1839.6 = 470.4 H  (the negative sign indicates a decrease in kinetic energy so we would not be making use of it further)

H = 3.9 m

4 0
3 years ago
With energy, changes in the physical world are possible. These can be a change in speed, a change in direction, a change from co
laiz [17]
True because energy can change its speed because of temperature and also its direction
3 0
3 years ago
Read 2 more answers
A wave changing shape when passing through an opening is an example of what?
igomit [66]
It is diffraction !!
7 0
3 years ago
1. In the laboratory, the life time of a particle moving with speed 2.8 x 10^10 cm\s is found to be 2.5 x 10^-7.
timofeeve [1]

Answer: n the laboratory, the life time of a particle moving with speed 2.8 x 10^10 cm\s is found to be 2.5 x 10^-7. Calculate the proper life of the ...

Explanation:

5 0
3 years ago
Other questions:
  • .Imagine that you pushed a box, applying a force of 60 newtons, over a distance of 4 meters. how much work have you done? 15 jou
    11·2 answers
  • Please help me......
    10·1 answer
  • Ok, so I've answered this question but I really need someone to just check through it because I have this feeling that I've done
    10·2 answers
  • at the extact same time, youj drop a piece of notebook paper and your science out the window. the science book hit first? why?
    10·1 answer
  • ou purchase a rectangular piece of metal that has dimen- sions 5.0 * 15.0 * 30.0 mm and mass 0.0158 kg. The seller tells you tha
    11·1 answer
  • PLS I NEED HELP ASAP!!!
    10·1 answer
  • A person shooting at a target from a distance of 450 metres finds that the sound of the bullet hitting the target comes 1 / 2 se
    5·1 answer
  • The substances referenced in the table are being considered for use in cooking materials. Since the materials must be melted dur
    13·1 answer
  • Compare and contrast an earthquake and a tsunami.
    15·1 answer
  • How do motion and Newton's laws apply to your everyday life? (all the laws)
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!