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
Zigmanuir [339]
2 years ago
15

A machine does 500 j of work in 20 sec. What is the power of this machine?

Physics
1 answer:
NNADVOKAT [17]2 years ago
6 0

Explanation:

P=W/t

P=500/20

P=25 W

You might be interested in
An ac power generator produces 73.37 a (rms) at 4623 v. the voltage is stepped up to 105,033 v by an ideal transformer, and the
evablogger [386]

Step up transformer is a device which is used to step up the voltage which is input with some value.

This is based upon the principle of mutual inductance and in this the voltage input and voltage output is different because of number of turns.

Here if ideal transformer is given then power input and power output of the transformer must be same as there is no power loss in ideal transformer.

So we can write

i_pV_p = i_sV_s

here

i_p = 73.37 A

V_p = 4623 V

V_s = 105033 A

now using above equation we will have

73.37*4623 = 105033*i_s

solving above we will have

i_s = 3.23 A

7 0
2 years ago
Which of the following statements is true?
andrezito [222]

Answer:

D. On average, a woman's athletic ability peaks at a later age than a man's.

Explanation:

5 0
3 years ago
A water-balloon launcher with a mass of 1.75 kg is suspended on a wire. It fires a 1.25 kg balloon to the east at a velocity of
poizon [28]

Answer:

8.6 to west

Explanation:

8 0
2 years ago
How could rescue workers use squeezing or compressing to get energy to their flashlights during rescue missions?
svlad2 [7]

Answer:

They can do this with the help of mechanical power generated from the human muscle.

Explanation:

Since rescue workers engage in missions where it is usually difficult for them to get electrical energy to their devices and working tools, they could employ various materials that can be sourced around them to get energy to their tools. One of such is the mechanical power generated from the human body through squeezing and compressing.

Some green devices such as the dyno torch have been designed to be powered through this method. Repeated squeezing of its flywheel allows light to be generated.

6 0
3 years ago
an 80 kg cart goes around the inside of a vertical loop of a roller coaster. the radius of the loop is 5m and the cart moves at
GarryVolchara [31]

Answer:

F=  224 N

Explanation:

Given that

mass ,m = 80 kg

Radius ,r= 5 m

speed at the top v= 8 m/s

The force at the top = F

Now by using the Second law of Newton's

F+mg=\dfrac{mv^2}{r}

Now by putting the values

F+80\times 10 = \dfrac{80\times 8^}{5}

Take  g = 10 m/s²

F= \dfrac{80\times 8^2}{5}-800

F=  224 N

Therefore the force exerted by the track at the top position will be 224 N.

3 0
3 years ago
Other questions:
  • An object is released from rest at a height h. During the final second of its fall, it traverses a distance of 38m. Determine th
    5·2 answers
  • If two objects of the same size move through the air at different speeds, which encounters the greater air resistance?a. The fas
    7·1 answer
  • A spring is compressed 0.035 m inside a dart gun. (K=500 N/m). The spring has elastic energy. Calculate it.
    15·1 answer
  • In diving to a depth of 248 m, an elephant seal also moves 296 m due east of his starting point. What is the magnitude of the se
    7·1 answer
  • Jenny wanted to test whether worms prefer light or darkness best. After
    10·1 answer
  • a car travel uniformly speed of 30 km/h for 30 minutes and then at uniform speed of 60km/h for next 30min calculate the average
    13·1 answer
  • 100 POINTS. PLEASE PROVIDE EXPLANATION
    5·1 answer
  • In reaching her destination, a backpacker walks with an average velocity of 1.34 m/s, due west. This average velocity results be
    12·2 answers
  • Find the mass of a sample that has a dersity of 2 g/mL and a volume of 10 mL
    14·1 answer
  • Write the two variables that are dependent on the force of the charge
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!