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
defon
3 years ago
6

A ventilating fan is operated by 0.5hp electric motor. How much work in joules can the fan do in 3 hours? (I need the answer asa

p)
Physics
1 answer:
shtirl [24]3 years ago
3 0

Answer:

Power= 0.5hp = 375W

T = 3hrs = 10800s

Power = Work done/ Time

Work = Power * Time = 375 * 10800 = 4050000J

You might be interested in
When is a body said to be motion (movement )?
Stels [109]

A body is said to be in motion when it's position changes continuously.

3 0
2 years ago
A rock is dropped from a bridge. What happens
Verdich [7]
When a rock is dropped from a bridge in this way, in terms of the magnitude of the acceleration and the speed of the rock as it falls, the best option is "<span>(1) Both acceleration and speed increase."</span>
5 0
2 years ago
A 70 kg person walks 200 m in 4 seconds. What is their momentum?
Gemiola [76]

Answer:

z65td8ztu4a7a5857a57a75477282u2hshshsh7e7eyeyw82773888898 idhw

8 0
2 years ago
Which example is NOT the proper use of a casting of a toolmark?
Reika [66]
When we say toolmark, this describes as the mark that is produced by a particular tool. This is typically used in forensic science for identification. Based on the examples above, the one that is not the proper use of casting of a toolmark is option B. Hope this helps.
4 0
2 years ago
Wegener believed continents moved, but he did not know how. Identify what needed to happen before Wegener's idea about moving co
pochemuha

D. Advances in technology were needed to gather more evidence.

Explanation:

New technologies had to be developed to ascertain Wegener's claims.

The major flaw in Wegener's postulate was that the moving continents lacked a mechanism to drive them into motion.

His theory needed more scientific backing also.

  • A major leap was made when new technologies used during the second world war was deployed to investigate the ocean floor.
  • Sequences of magnetic anomalies were unraveled using equipment developed during the second world war
  • This gave further proof to the idea of continental drift and it expanded the theory into a more broader and inclusive theory of plate tectonics.

Learn more:

Wegener brainly.com/question/5002949

#learnwithBrainly

6 0
2 years ago
Other questions:
  • In pottery class, you throw a pot from a lump of wet clay. your pot's mass is 5.5 kg. after the pot is fired, it's mass is 4.9 k
    15·1 answer
  • A body is found in the woods and all you have left to analyze are bones and teeth. Explain what isotopes would be helpful to you
    12·1 answer
  • What will most likely happen if a sound wave moves from the air through a solid?
    12·2 answers
  • Find the resultant gravitational force exerted on the object at the origin by the other two objects. The universal gravitational
    13·1 answer
  • Sound travels through air at 343 m/s at 20 °C. A bat emits an ultrasonic squeak and hears the echo 0.05 second later . How far a
    7·1 answer
  • Please help me out i'm so depressed and such a failure
    10·1 answer
  • Which of the following would have the highest kinetic energy? *
    9·1 answer
  • 33. What steps can you take to minimize your risks from air pollution?
    14·1 answer
  • A 432 g sample of 60/27Co has a decay constant of 4.14 x 10-9 s-1. How long will it take before only 1/3 of the original sample
    11·1 answer
  • For the galvanic cell at 298 k zn(s) 2in2 (aq)zn2 (aq) 2in (aq) eocell = 0.36 v what is the equilibrium constant, k?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!