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
never [62]
3 years ago
12

Superman throws a boulder of weight 3800 n at an adversary on the surface of the earth, where the magnitude of the acceleration

due to gravity, g = 9.80 m/s2 . what horizontal force must superman apply to the boulder to give it a horizontal acceleration of 12.8 m/s2 ?
Physics
1 answer:
evablogger [386]3 years ago
5 0
The weight of the boulder is 3800 N, therefore its mass i s
3800/9.8 = 387.755 kg

If the horizontal acceleration is 12.8 m/s², then the horizontal force applied is
F = (387.755 kg)*(12.8 m/s²) = 4.963 x 10³ n = 4.963 kN

Answer: 4.963 kN
You might be interested in
I need help if you can help me to get 10 points.
Alinara [238K]

Answer:

It allows the reader to feel more connected to her purpose

Explanation:

If Cooper is using personal examples for her argument, she is allowing the reader see more of her point of view, which can also lead them to feel connected to her purpose

6 0
3 years ago
Read 2 more answers
A uniform steel girder of weight 22KN and of length 12m is lifted off the ground at one end by means of a crane. When the raised
Keith_Richards [23]

Answer:

Explanation:

For free body diagram see attached sheet .

W is weight of steel girder acting at the middle point of its length . T is tension in the cable .

OB = √ ( 12² - 2² )

= 11.83 m .

OC = 11.83 / 2 = 5.915 m

Taking moment of tension T and weight W about point O

W x OC = T x OB

22 x 5.915 = T x 11.83

T = 22 x 5.915 / 11.83

= 11 kN

Considering forces acting in vertical direction and equating forces in opposite direction

T + R = W

R = W - T

= 22 - 11 = 11 KN

So force of grinder on the ground = R

= 11 KN.

8 0
2 years ago
What is one way in which objects transfer <br> momentum? Explain.
defon
Through vibration when it vibrates
it transfer momentum.


7 0
3 years ago
Read 2 more answers
How fast do differnt parts of the em spectrum travel in a vaccuum
Black_prince [1.1K]

All electromagnetic radiation ... all wavelengths, all frequencies ... has the
same speed, as long as you're measuring all through the same medium.

The speed is fastest in vacuum ... 299,792,458 meters per second.  It's
slower than that in any material, and different in every material.


7 0
3 years ago
A satellite is orbiting Earth in an approximately circular path. It completes one revolution each day (86,400 seconds). Its orbi
Dafna1 [17]

For each revolution, the satellite covers the circumference
of its orbit.

The circumference of a circle is    (pi) x (diameter).

Since the satellite is 22,500 miles from the center, that number
is the radius of the circle.  The diameter is  45,000 miles.

The circumference is    (pi) x (45,000 miles) = 141,372 miles
                                                                        
The satellite's average speed is  141,372 miles per day, or

       (141,372 / 24) = 5,890 miles per hour

relative to the center of the Earth.



5 0
3 years ago
Other questions:
  • What is one defining feature of a prokaryotic cell
    10·1 answer
  • In a double‑slit interference experiment, the wavelength is lambda=487 nm , the slit separation is d=0.200 mm , and the screen i
    14·1 answer
  • The height of a helicopter above the ground is given by h = 2.80t3, where h is in meters and t is in seconds. At t = 1.55 s, the
    14·2 answers
  • A 10 kg ball has a momentum of 40 kg.m/s.what is the ball's speed?
    8·1 answer
  • spring is compressed 4.2 cm. If a box is placed at the end of the compressed spring, and let go, how far up the ramp will the sp
    7·1 answer
  • Two identical balls are at rest and side by side at the top of a hill. You let one ball, A, start rolling down the hill. A littl
    14·1 answer
  • As a United States citizen, the requirement to serve on juries if called upon is considered which of the following?
    11·1 answer
  • What is the magnitude of velocity for a 3,100 kg car possessing 4,100 kg•m/s of momentum?​
    10·2 answers
  • A woman pulls a 7.87 kg suitcase,
    6·1 answer
  • Sarah drives at a constant speed of 15 m/s around a circular horizontal curve of diameter 60 m. What are the magnitude and direc
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!