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
MA_775_DIABLO [31]
3 years ago
13

a spring is compressed then launches a block vertically. The spring is compressed 15 cm and has a spring constant of 342 N/m. If

the block has a mass of 1.4 kg, what is the maximum height it can reach?
Physics
1 answer:
pickupchik [31]3 years ago
8 0

Answer:

6.342 m/s. 2).

Explanation:

You might be interested in
HELP FAST MARKING BRAINLEST A neutral electroscope is touched with a positively charged rod. After the rod is removed the electr
ELEN [110]

on touching electroscope gets positively charged, so answer is B. conduction

5 0
3 years ago
How much force acts on one surface of a rectangular bedroom wall that is 2.20 m by 3.20 m when atmosspheric pressure is?
irakobra [83]
<span>We know that pressure is the force applied into a surface, in our case the wall of the room, so then first we will calculate the surface of this wall: S = 2.2 * 3.2 = 7.04 m2 Then we also know the atmospheric pressure in normal conditions is 1 atm. That is the same 1 atm = 101325 Pascals or 101325 N/m2 Now we need to use the formula : P = F/S where P is pressure, F is force and S is surface to calculate the force: F = P * S = 101325 * 7.04 = 713,328 Newtons Conclusion: the force acts on the wall due the air inside the room is 713,328 N</span>
3 0
3 years ago
Kinematics
leonid [27]

Answer:

a)

a = 2 [m/s^2]

b)

a = 1.6 [m/s^2]

c)

xt = 2100 [m]

Explanation:

In order to solve this problem we must use kinematics equations. But first we must identify what kind of movement is being studied.

a)

When the car moves from rest to 40 [m/s] by 20 [s], it has a uniformly accelerated movement, in this way we can calculate the acceleration by means of the following equation:

v_{f} = v_{i}+(a*t)

where:

Vf = final velocity = 40 [m/s]

Vi = initial velocity = 0 (starting from rest)

a = acceleration [m/s^2]

t = time = 20 [s]

40 = 0 + (a*20)

a = 2 [m/s^2]

The distance can be calculates as follows:

v_{f} ^{2} =  v_{i} ^{2}+(2*a*x)

where:

x1 = distance [m]

40^2 = 0 + (2*2*x1)

x1 = 400 [m]

Now the car maintains its speed of 40 [m/s] for 30 seconds, we must calculate the distance x2 by means of the following equation, it is important to emphasize that this movement is at a constant speed.

v = x2/t2

where:

x2 = distance [m]

t2 = 30 [s]

x2 = 40*30

x2 = 1200 [m]

b)

Immediately after a change of speed occurs, such that the previous final speed becomes the initial speed, the new Final speed corresponds to zero, since the car stops completely.

v_{f} = v_{i}-a*t

Note: the negative sign of the equation means that the car is stopping, i.e. slowing down.

0 = 40 - (a *25)

a = 40/25

a = 1.6 [m/s^2]

The distance can be calculates as follows:

v_{f} ^{2}  = v_{i} ^{2} -2*a*x3\\

0 = (40^2) - (2*1.6*x3)

x3 = 500 [m]

c)

Now we sum all the distances calculated:

xt = x1 + x2 + x3

xt = 400 + 1200 + 500

xt = 2100 [m]

8 0
2 years ago
What is the function of a hypothesis in the scientific inquiry process
svp [43]
To make a educational guess based on the your observations
6 0
2 years ago
write a motivational speech to someone who wants to become a scientist please write this as it is for kids :) PLEASEE HELP!!!!
Gekata [30.6K]

Answer:

A motivational speech for a to be scientist. Crazy experiments and more you have the right to be whatever you adore. Your young yet strong everything will come along. I believe in you and so should you since your becoming a scientist you’ll acquire it soon. You’ll discover new things and sight to see when you become a scientist make sure to call me. :)

Explanation:

Hope it’s good I made up a couple words that rhyme good luck!

6 0
3 years ago
Read 2 more answers
Other questions:
  • Please answer please please <br><br><br>Physics ​
    6·1 answer
  • A book with a mass of 1kg is dropped from a height of 3m . What is the potential energy of th book when it reaches the floor?​
    15·1 answer
  • If 125 j of heat energy is applied to a block of silver weighing 29.3 g, by how many degrees will the tem- perature of the silve
    5·1 answer
  • Horizontal circular motion questions:
    8·1 answer
  • What do the length of the cord and gravity determine for a pendulum?
    14·2 answers
  • What energy transformation takes place when an object is pushed up an inclined plane?
    10·2 answers
  • g Two planets are in circular orbits around a star of with unknown mass. One planet is orbiting at a distance r1=150×106 km and
    5·2 answers
  • Why is it important that water is present within the cell?
    13·2 answers
  • Is it possible for lightning to be used as everyday electricity? Is it safe, and or stable? Can lightning be multiplied?
    13·2 answers
  • What are the advantages of atmospheric pressure?​
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!