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
mel-nik [20]
1 year ago
7

An m = 7.25 kg mass is suspended on a string which is pulled upward by a force of F = 76.7 N as shown in the figure. If the upwa

rd velocity of the mass is 2.25 m/s right now, then what is the velocity 3.50 s later?

Physics
1 answer:
GenaCL600 [577]1 year ago
4 0

The velocity after 30s would be 38. 99 m/s

<h3>How to calculate the velocity</h3>

Using the formula

F = m Δ V/ t

Where, F = force = 76. 7N

m = mass = 7. 25kg

Δv = change in velocity= V2 - V1 and V1 = 2. 25 m/s

t = time = 3. 50s

76. 7 = 7. 25 × (v2 - 2. 25) / 3. 50

76. 7 = 2. 07 × (v2 - 2. 25)

make v2 subject of formula

v2 - 2. 25 = 76. 07 ÷ 2. 07

v2 = 36. 74 + 2. 25

v2 = 38. 99 m/s

Thus, the velocity after 3. 50s would be 38. 99 m/s

Learn more about change in velocity here:

brainly.com/question/10962624

#SPJ1

You might be interested in
The ratio of carbon-14 to nitrogen-14 is an artifact is 1:3. Given that half-life of carbon-14 is 5730years, how old is the arti
dusya [7]

Answer:

9155 years old

Explanation:

We use the following expression for the decay of a substance:

N = N_0\,\,e^{-k*t}

So we first estimate the value of k knowing that the half-life of the C14 is 5730 years:

N = N_0\,\,e^{-k*t}\\N_0/2=N_0\,\,e^{-k*5730}\\1/2 = e^{-k*5730}\\ln(1/2)=-k*5730\\k= 0.00012

so, now we can estimate the age of the artifact by solving for"t" in the equation:

1/3=e^{-0.00012*t}\\ln(1/3)= -0.00012*t\\t=9155. 102

which we can round to 9155 years old.

5 0
3 years ago
Perpendicular slope to 3x-y=4
Mashcka [7]
Perpendicular slope would be 1/3. so the equation will be Y=1/3x -4

4 0
2 years ago
you add equal amounts of heat to two identical cylinders containing equal amounts of the same ideal gas. cylinder a is allowed t
OleMash [197]

Temperature rise will be there in cylinder B more than in cylinder A because of internal energy.

what is internal energy?

The sum of the kinetic and chemical potential energies of all the particles in the system is the internal energy. Particles accelerate and pick up kinetic energy when energy is applied to increase the temperature.

Briefing:

Cylinder A uses the heat it absorbs to both work while expanding and to increase internal energy (or temperature).

While cylinder B solely uses the heat it absorbs to increase its internal energy 

As a result, cylinder B's temperature rise is greater than cylinder A's.

To know more about internal energy visit:

brainly.com/question/11278589

#SPJ4

3 0
11 months ago
Which is an example of current electricity? <br>​
VARVARA [1.3K]
A. A child rubs a balloon
5 0
2 years ago
How is sound produced ​
Dafna11 [192]

Sounds are created when something vibrates (shakes back and forth), sending waves of vibrations into the ears of the listener. When a bell is struck, the metal vibrates. The vibrations travel through the air as sound waves.

hope this helps

7 0
2 years ago
Other questions:
  • Pls help All objects above _____ emit radiation. 0°C 0°F 0 K 100 K
    8·2 answers
  • Four model rockets are launched in a field. The mass of each rocket and the
    14·1 answer
  • If the moon's acceleration due to gravity caused by its gravitational field is one-sixth that of the earth, what is its accelera
    5·1 answer
  • A ball is thrown up into the air with the initial velocity of 18 m/s. A) How high does the ball go? B) Calculate the time needed
    8·1 answer
  • A certain star has a temperature twice that of the Sun and a luminosity 70 times greater than the solar value. What is its radiu
    7·1 answer
  • Which occurs when a warm fluid cools down?<br><br> ⇔⇔⇔⇔⇔⇔⇔⇔⇔⇔⇔⇔⇔⇔⇔⇔⇔⇔⇔⇔⇔⇔⇔⇔⇔⇔⇔⇔⇔⇔⇔⇔⇔⇔⇔⇔⇔⇔
    13·2 answers
  • Which planet do most known extrasolar planets most resemble?
    7·2 answers
  • Smooth muscle is found mainly in
    9·1 answer
  • Write two examples of machine which changes the direction of force​
    11·1 answer
  • Two trolleys are moving in the same direction along a track. Trolley 1 has a momentum of 2 kg m/s and Trolley 2 has a momentum o
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!