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
Sergio [31]
3 years ago
5

The cement bag shown in the figure has a mass of 50 kg and the small pulley has a mass of 2 kg. If the cement bag is pulled upwa

rds with an acceleration of 2 m/s^2, find the force F pulling the rope.

Physics
1 answer:
GuDViN [60]3 years ago
3 0

For the cement bag we can say as per its force diagram we will have

2F - mg = ma

here we will have

m = 50 kg

a = 2 m/s^2

now we will have

F = \frac{mg + ma}{2}

now plug in all data

F = \frac{50(9.8 + 2)}{2}

F = 295 N

so the pulling force will be 295 N

You might be interested in
I need help can someone help me pls
pychu [463]

Answer:

copper

Explanation:

4 0
3 years ago
Read 2 more answers
What is the energy range (in joules) of photons of wavelength 410 nm to 750 nm ? Express your answers using two significant figu
andreyandreev [35.5K]

Answer:

4.9 x 10^-19 J, 2.7 x 10^-19 J

Explanation:

first wavelength, λ1 = 410 nm = 410 x 10^-9 m

Second wavelength, λ2 = 750 nm = 750 x 10^-9 m

The relation between the energy and the wavelength is given by

E = h c / λ

Where, h is the Plank's constant and c be the velocity of light.

h = 6.63 x 10^-34 Js

c = 3 x 10^8 m/s

So, energy correspond to first wavelength

E1 = (6.63 x 10^-34 x 3 x 10^8) / (410 x 10^-9) = 4.85 x 10^-19 J

E1 = 4.9 x 10^-19 J

So, energy correspond to second wavelength

E2 = (6.63 x 10^-34 x 3 x 10^8) / (750 x 10^-9) = 2.652 x 10^-19 J

E2 = 2.7 x 10^-19 J

4 0
3 years ago
Around which months does el nino end and la nina start?
ad-work [718]

Answer:

They both tend to develop during the spring (March-June), reach peak intensity during the late autumn or winter (November-February), and then weaken during the spring or early summer (March-June)

3 0
3 years ago
Read 2 more answers
A 1-kilogram parcel of air is at 35°c and contains 7 grams of water vapor. What is the relative humidity?
Nitella [24]

Answer:

20%

Explanation:

Relative Humidity (%) = (water vapor content÷water vapor capacity) × 100

=(7÷35)×100

=(0.2)×100

=20%

According to the Temperature-Water Vapor Capacity Table, the water capacity at 35 °C is 35 grams.

Water Vapor Capacity: The amount of water (grams) which air can hold at a given temperature.

Water Vapor Content: The amount of water vapor actually present in the air.

8 0
3 years ago
Explain why a diverging lens is used to correct nearsightedness (difficulty seeing objects far away).
Darina [25.2K]

Answer:

so that it can diverge the light to make sure that it focused on the ratina and the image is formed.

Explanation:

nearsightedness is when the light is focused in front of the ratina and for an image to be formed in the eye, the light must be focused on the ratina so to correct that we use the diverging lenses so that it will diverge the light and allow the cornea and the lens to converge it so it is focused on the ratina.

8 0
3 years ago
Read 2 more answers
Other questions:
  • the density of gold is 19.3 g/cm3. suppose a certain gold wedding ring deplaced 0.55mL of liquid when dropped in a glass of spar
    12·1 answer
  • A mother and father have two daughters. The daughters have some similar and some different physical features. Which statement be
    10·2 answers
  • A scientist wants to test ways to reduce pollution in lake . What is the bestway of doing this
    13·2 answers
  • A red car and a blue car can move along the same straight one-lane road. Both cars can move only at one speed when they move (e.
    9·1 answer
  • Renald completed only one trial of his experiment. what effect will this most likely have?
    15·1 answer
  • A stone dropped from the top of a 80m high building strikes the ground at 40 m/s after falling for 4 seconds. The stone's potent
    6·1 answer
  • What frequency is received by a person watching an oncoming ambulance moving at 115 km/h and emitting a steady 753 Hz sound from
    8·1 answer
  • Demarcus launches a small weight into the air. The weight takes 6.4 seconds to reach the ground again. At what time did the weig
    15·1 answer
  • How many miles is a light year
    15·2 answers
  • the taipei 101 in taiwan is a 1667-foot tall, 101-story skyscraper. the skyscraper is the home of the world's fastest elevator.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!