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
alexgriva [62]
3 years ago
7

A 75-hp compressor in a facility that operates at full load for 2500 h a year is powered by an electric motor that has an effici

ency of 93 percent. If the unit cost of electricity is $0.11/kWh, the annual electricity cost of this compressor is
Physics
1 answer:
stealth61 [152]3 years ago
3 0

Answer:

C = 16544.35\, USD

Explanation:

The annual electricity cost is:

C = (\frac{1}{0.93} )\cdot(75\, h.p.)\cdot(0.746\, kW)\cdot(2500\,h)\cdot(\frac{3600\,s}{1\,h} )\cdot(\frac{1\,kWh}{3600\,kJ} )\cdot (0.11\,\frac{USD}{kWh} )

C = 16544.35\, USD

You might be interested in
A ball is kicked at an angle of 35° with the ground.a) What should be the initial velocity of the ball so that it hits a target
stiks02 [169]

Answer:

a.18.5 m/s

b.1.98 s

Explanation:

We are given that

\theta=35^{\circ}

a.Let v_0 be the initial velocity of the ball.

Distance,x=30 m

Height,h=1.8 m

v_x=v_0cos\theta=v_0cos35

v_y=v_0sin\theta=v_0sin35

x=v_0cos\theta\times t=v_0cos35\times t

t=\frac{30}{v_0cos35}

h=v_yt-\frac{1}{2}gt^2

Substitute the values

1.8=v_0sin35\frac{30}{v_0cos35}-\frac{1}{2}(9.8)(\frac{30}{v_0cso35})^2

1.8=30tan35-\frac{6574.6}{v^2_0}

\frac{6574.6}{v^2_0}=21-1.8=19.2

v^2_0=\frac{6574.6}{19.2}

v_0=\sqrt{\frac{6574.6}{19.2}}=18.5 m/s

Initial velocity of the ball=18.5 m/s

b.Substitute the value then we get

t=\frac{30}{18.5cos35}

t=1.98 s

Hence, the time for the ball to reach the target=1.98 s

7 0
3 years ago
There. That is better.
mihalych1998 [28]

a
a
b
b
a
b
a
This will really help you learn a lot.

6 0
3 years ago
When Dr. Montero was observing the endoplasmic reticulum of a cell using an electron microscope, she noticed that it was covered
Vesnalui [34]
The answer is Convoluted endoplasmic reticulum
7 0
3 years ago
How do the cities in the northern hemisphere compare to those in the southern hemisphere?
a_sh-v [17]
By the rate of the hemisphere
4 0
3 years ago
If the worlds human population stay away from all the fast foods that they purchase and consume their overall physical and menta
Nadusha1986 [10]

Hi ChloeRenee12345,

Your Question:

If the worlds human population stay away from all the fast foods that they purchase and consume their overall physical and mental state would be greatly affected

Answer:

Well absolutely not! Everyone will not be affected by not purchasing fast food, It will actually be better for the society. Fast food has bad properties that makes people get fat.

5 0
3 years ago
Other questions:
  • If you cannot get a chair to move across the floor, it is because ___ friction opposes your push.
    8·1 answer
  • Surface waves move only in a back and forth motion.<br> True <br> False
    7·2 answers
  • Explain why two different elements cannot occupy the same box in the periodic table
    13·1 answer
  • A proton traveling to the right enters a region of uniform magnetic field that points into the screen. When the proton enters th
    6·1 answer
  • a spring scale is constructed so that each 0.10-n increment is separated by 0.50 cm. what spring constant is necessary for the s
    13·1 answer
  • A worker wants to load a 12 kg crate into a truck by sliding the crate up a straight ramp which is 2.5 m long and which makes an
    12·1 answer
  • What are four examples of properties?
    15·1 answer
  • What are plate boundries
    7·2 answers
  • Jocelyn is running for the U.S Senate. What is one of the qualifications for office she must meet?
    13·2 answers
  • Will give brainliest!
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!