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
Nady [450]
3 years ago
11

A horizontal spring with spring constant 210 Nm is compressed by 20 cm and then used to launch a 250 g box across the floor. The

coefficient of kinetic friction between the box and the floor is 0.23. What is the box's launch speed?
Physics
1 answer:
Damm [24]3 years ago
3 0

Answer:

ugmd = 1/2 kx²

d = (1/2 kx²) / (ugm)

= (1/2 * 250 N/m * (0.2 m)²) / (0.23 * 9.81 m/s² * 0.3 kg)

= 7.4 m

ugmd = 1/2 mv²

v = √2ugd

= √(2(0.23)(9.81 m/s²)(7.4 m)

= 5.8 m/s

Explanation:

You might be interested in
State which of the three materials would allow the thermometer to measure the
nignag [31]

Answer:

i dont know

Explanation:im sorry to do this to you but you dont have to watch ads if you answer questions

6 0
2 years ago
Difference between male and female gamete​
Inga [223]

Answer:

The male gamete is smaller in comparison to that of the female gamete.

The male gamete is conical from the front while the female gamete is spherical.

The cytoplasm in the male gamete is less in comparison to that of the female gamete.

The male gamete can move with the help of the tail while the female gametes are immobile and do not have any tail or flagella present.

The number of mitochondria present in the sperm is less than the number of mitochondria present in the ovum.

The male gamete has acrosome present in the head region that contains enzymes for dissolving the membranes present around the ovum. The ovum does not contain such digestive enzymes.

Explanation:

5 0
3 years ago
Read 2 more answers
When two waves undergo complete, constructive interference, which of the following increases ?
Lostsunrise [7]
A speed cause it would slow down meeting eachother
4 0
3 years ago
A beam of electrons is sent horizontally down the axis of a tube to strike a fluorescent screen at the end of the tube. On the w
slamgirl [31]

Answer:

The answer is 3.

Explanation:

The answer to this question can be found by applying the right hand rule for which the pointer finger is in the direction of the electron movement, the thumb is pointing in the direction of the magnetic field, so the effect that this will have on the electrons is the direction that the middle finger points in which is right in this example.

So as a result of the magnetic field directed vertically downwards which is at a right angle with the electron beams, the electrons will move to the right and the spot will be deflected to the right of the screen when looking from the electron source.

I hope this answer helps.

4 0
3 years ago
A 1.2 nf parallel-plate capacitor has an air gap between its plates. Its capacitance increases by 3.0 nf when the gap is filled
Damm [24]

Answer:

2.5

Explanation:

The capacitance of a parallel-plate capacitor filled with dielectric is given by

C=kC_0

where

k is the dielectric constant

C_0 is the capacitance of the capacitor without dielectric

In this problem,

C_0=1.2 nF is the capacitance of the capacitor in air

C=3.0 nF is the capacitance with the dielectric inserted

Solving the equation for k, we find

k=\frac{C}{C_0}=\frac{3.0 nF}{1.2 nF}=2.5

3 0
3 years ago
Read 2 more answers
Other questions:
  • Based on the diagram of a roller coaster car on a roller coaster track, what statement is true?
    5·1 answer
  • Does all mass take up space
    14·1 answer
  • Energy is released from ATP when
    10·1 answer
  • Electric Cars A 12 volt car battery has a capacity of 100 ampere-hours, supplying 2 A of current for 50 hours. How much ENERGY d
    12·1 answer
  • Two clowns are launched from the same spring-loaded circus cannon with the spring compressed the same distance each time. Clown
    6·1 answer
  • The normal movement of water across this membrane is from high to low ____________ concentration.
    7·1 answer
  • A force of 8 N accelerates by 4 m/s^2. What would be the amount of force needed to give a final acceleration of 5.3 m/s^2
    15·1 answer
  • If the object represented by the FBD below has a mass of 2.0 kg, what is the
    9·1 answer
  • If the voltage amplitude across an 8.50-nF capacitor is equal to 12.0 V when the current amplitude through it is 3.33 mA, the fr
    5·1 answer
  • Describe in brief<br> brief the scope and excitement<br> in Physics
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!