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
Gala2k [10]
4 years ago
6

g Suppose Howard is pulling a bucket of bricks up along the side of a building with a rope. The bricks have a mass of 20 kg and

are not touching the side of the building. With what tension force must Howard achieve to (briefly) keep an acceleration rate of 2.0 m/s2 on the bucket of bricks?
Physics
1 answer:
cupoosta [38]4 years ago
4 0

Answer:

= 236N

Explanation:

tension T = mg + ma

Given that,

m = 20kg

g = 9.8 m/s²

a = 2.0 m/s²

T = m(g + a)

T = 20( 9.8 + 2.0)

  = 20(11.8)

  = 236N

You might be interested in
atoms combine in different ways to make up all of the substances you encounter everyday true or false
amm1812
True hope this helps :)
4 0
3 years ago
A flying saucer lifts the Physical Science building 10,000 ft into the air before discovering it is useless and discards the rem
scZoUnD [109]

Answer:

500000000 lbft/s

Explanation:

F = Force or weight = 1000000 lbf

s = Displacement = 10000 ft

t = Time taken = 20 seconds

Work done is given by

W=Fs\\\Rightarrow W=1000000\times 10000\\\Rightarrow W=10000000000\ lb-ft

Power is given by

P=\dfrac{W}{t}\\\Rightarrow P=\dfrac{10000000000}{20}\\\Rightarrow P=500000000\ lbft/s

One Saucer power is 500000000 lbft/s

7 0
3 years ago
What part of the scientific method tests the hypothesis?
blagie [28]

Answer:

A hypothesis is a conjecture, based on knowledge obtained while seeking answers to the question. The hypothesis might be very specific, or it might be broad. Scientists then test hypotheses by conducting experiments or studies.

Explanation:

mark me as the brainliest

have a great day

6 0
3 years ago
An ideal refrigerator does 130. 0 j of work to remove 780. 0 j of heat from its cold compartment during each cycle. what is the
zheka24 [161]

The refrigerator's coefficient of performance is 6.

The heat extracted from the cold reservoir Q cold (i.e., inside a refrigerator) divided by the work W required to remove the heat is known as the coefficient of performance, or COP, of a refrigerator (i.e., the work done by the compressor). The required inside temperature and the outside temperature have a significant impact on the COP.

As the inside temperature of the refrigerator decreases, its coefficient of performance decreases. The coefficient of performance (COP) of refrigeration is always more than 1.

The heat produced in the cold compartment, H = 780.0 J

Work done in ideal refrigerator, W = 130.0 J

Refrigerator's coefficient of performance = H/W

                                                                     = 780/130

                                                                     = 6

Therefore, the refrigerator's coefficient of performance is 6.

Energy conservation requires the exhaust heat to be = 780 + 130

                                                                                          = 910 J

Learn more about  coefficient here:

brainly.com/question/18915846

#SPJ4

5 0
2 years ago
The unit of force,newton is a derived unit.why?​
Alenkasestr [34]

Answer: Newton, the unit of force, is defined based on Newton's Second Law (F=ma), as the force required to give a mass of one kilogram an acceleration of 1 meter/second2. Thus, it is derived from these other units.

Explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • An object starts at rest then accelerates at a rate of 5m/s^2 for 1 second and then 2m/s^2 for 2 seconds. What is the average ac
    10·1 answer
  • A baseball player hits a ball at an angle of 52 degrees and at a height of 4.8 ft. if the ball's initial velocity after being hi
    13·2 answers
  • Match each item to its best description.
    6·2 answers
  • What is the kinetic energy of a 1200 kg roller coaster that is moving with a speed of 24.0 m/s. ?
    14·1 answer
  • Force applied through a rope or string
    15·1 answer
  • A block on a rough, horizontal surface is attached to a horizontal spring of negligible mass. The other end of the spring is att
    9·1 answer
  • Remaining Time: 1 hour, 49 minutes, 34 seconds.
    11·1 answer
  • Why do herbivores of the Serengeti migrate year after year
    5·2 answers
  • A 3.91 kg cart is moving at 5.7 m/s when it collides with a 4 kg cart which was at rest. They collide and stick together.
    8·1 answer
  • Which of the following is the least important factor of a personal fitness program? A. the individual's personal conditions B. t
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!