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
PolarNik [594]
2 years ago
14

Please help someone. A generator consumes 147 joules of energy in fuel and produces 75 joules of energy

Physics
1 answer:
timama [110]2 years ago
7 0

Answer:

A

Explanation:

Current effiency

= 75/147

= 0.5102

New Efficiency

= 120/100 × 0.5102

= 0.6122

Only option A satisfies this efficiency.

You might be interested in
Describe a solar eclipse. Be sure to include the positions of the sun, moon, and earth.
Alex777 [14]
It’s the type of eclipse that occurred when the moon passes between the sun and earth, and when the moon fully or partially blocks the sun.
7 0
2 years ago
Can someone help me with this
yKpoI14uk [10]

bonded pairs of electrons, lone pairs of electrons.

4 0
2 years ago
Which of the following is a hypothesis?
inna [77]

Answer:

C

Explanation:

Hypothesis is one of the science methods. Hypothesis is the same as guessing. It's a scientific method that precedes observations.

According to the question asking that Which of the following is a hypothesis ?

The correct option is C which is

If a squid is attacked by a predator, it will squirt ink

It is an hypothesis because there is no experimental evidence to back it up.

5 0
3 years ago
The roller coaster is designed according to safety regulations that prohibit the speed of the car from exceeding 20 m/s. find th
hram777 [196]

maximum allowed value of the speed in roller coaster is given as

v = 20 m/s

now from kinematics we can say

v^2 - v_i^2 = 2 a s

here initial speed will be

v_i = 0

acceleration is due to gravity

a = 9.8 m/s^2

now we can use this to find the height

20^2 - 0^2 = 2 * 9.8* h

400 = 19.6 *h

h = 20.4 m

so maximum allowed height will be 20.4 m

4 0
3 years ago
A passenger on a Ferris wheel moves in a vertical circle at a constant speed. Are the forces on her balanced?
vovikov84 [41]

C.  The force is a constant change,  because her position on the Ferris wheel will constantly change.  I believe this is the answer, but use sources to double check.  I might use different vocab. then your teachers.  

6 0
2 years ago
Other questions:
  • A truck driver has a shipment of apples to deliver to a destination 550 miles away. The trip usually takes him 10.0 hours. Today
    13·1 answer
  • To what does the term register refer in describing sound?
    8·1 answer
  • Why does sound travel faster under water??
    12·1 answer
  • As your hand moves back and forth to generate longitudinal pulses in a spiral spring, your hand completes 3.19 back-and-forth cy
    15·1 answer
  • If a water wave completes one cycle in 2 seconds, what is the period of the wave?
    6·2 answers
  • What does a 10-dB increase in loudness represent?
    5·1 answer
  • A 37-cm-long wire of linear density 18 g/m vibrating at its second mode, excites the third vibrational mode of a tube of length
    12·2 answers
  • Suzanne makes a tower out of six identical plastic box. Then she uses a pan balance to measure the mass of the tower. She finds
    15·2 answers
  • At what distance from a 0.100 C<br> charge will the electric field be<br> 10000 N/C?<br> (Unit = m)
    5·1 answer
  • A wire is carrying current vertically downward. What is the direction of the force due to Earth's magnetic field on the wire?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!