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
podryga [215]
3 years ago
6

Your cat "Ms." (mass 7.00 {\rm kg}) is trying to make it to the top of a frictionless ramp 2.00 {\rm m} long and inclined upward

at 30.0 ^\circ above the horizontal. Since the poor cat can't get any traction on the ramp, you push her up the entire length of the ramp by exerting a constant 100 {\rm N} force parallel to the ramp.
If Ms. takes a running start so that she is moving at 2.40 {\rm m/s} at the bottom of the ramp, what is her speed when she reaches the top of the incline? Use the work-energy theorem.

Physics
1 answer:
lbvjy [14]3 years ago
4 0

Answer:

Final velocity at the top of the ramp is 6.58m/s

Explanation

Check the attachment

You might be interested in
A violin string is 45.0 cm long and has a mass of 0.242 g. When tightened on the neck of the violin, the distance between the pi
stiks02 [169]

Answer:

The tension is 75.22 Newtons

Explanation:

The velocity of a wave on a rope is:

v=\sqrt{\frac{TL}{M}} (1)

With T the tension, L the length of the string and M its mass.

Another more general expression for the velocity of a wave is the product of the wavelength (λ) and the frequency (f) of the wave:

v= \lambda f (2)

We can equate expression (1) and (2):

\sqrt{\frac{TL}{M}}=\lambda f

Solving for T

T= \frac{M(\lambda f)^2}{L} (3)

For this expression we already know M, f, and L. And indirectly we already know λ too. On a string fixed at its extremes we have standing waves ant the equation of the wavelength in function the number of the harmonic N_{harmonic} is:

\lambda_{harmonic}=\frac{2l}{N_{harmonic}}

It's is important to note that in our case L the length of the string is different from l the distance between the pin and fret to produce a Concert A, so for the first harmonic:

\lambda_{1}=\frac{2(0.425m)}{1}=0.85 m

We can now find T on (3) using all the values we have:

T= \frac{2.42\times10^{-3}(0.85* 440)^2}{0.45}

T=75.22 N

3 0
3 years ago
How do you calculate energy lost due to friction in an experiment?
Snowcat [4.5K]

Answer:

A treadmill get it? but its   Ff * d cos theta

Explanation:

6 0
3 years ago
Give reason as to why space is a quiet place?
Darina [25.2K]

Answer:A Quiet Place is a 2018 American horror film directed by and starring John Krasinski. Written by ... Four-year-old Beau is drawn to a battery-powered space shuttle toy, but Lee takes it away due ... Beau activates the toy when the family is walking home while crossing a bridge, giving away his location to a nearby creature that .

Explanation:

8 0
2 years ago
A deer with a mass of 146kg is running head on toward you with a speed of 17 m/s. You are going north. Find the momentum of the
Pavel [41]
Momentum = Mass * Velocity = 146 * 17 = 2482  kgm/s
6 0
3 years ago
Read 2 more answers
When does the radioactive decay of a radioisotope stop? Give one example.
Romashka-Z-Leto [24]

Answer:

When does the radioactive decay of a radioisotope stop? Give one example. An unstable isotope continues the decay process until it reaches a stable form. One example is the decay of carbon-14 to nitrogen-14.

Explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • What kind of motion is the motion of the “flying bully”? How much and what is
    11·1 answer
  • When a simple machine multiplies force, it decreases
    15·1 answer
  • What is the velocity of a beam of electrons that goes undeflected when passing through perpendicular electric and magnetic field
    14·1 answer
  • Brittany stands at rest on a skateboard. The combined mass of Brittany and the skateboard is 62 kg. Dave tosses a 3.7-kg pumpkin
    11·1 answer
  • Can an object emit different portions of the electromagnetic spectrum at the same time?
    15·1 answer
  • Which type of air mass forms over the ocean near the equator?
    9·2 answers
  • What is the equivalent resistance of the circuit?
    9·1 answer
  • A mass is attached to the end of a spring and set into oscillation on a horizontal frictionless surface by releasing it from a c
    6·1 answer
  • For factors that affect capillarity<br>​
    11·2 answers
  • Determine the angle between the directions of vector a = 3.00i 1.00j and vector b = 1.00i 3.00j .
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!