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
Tanzania [10]
3 years ago
12

What is the efficiency of a car's engine when heat input is 400,000 joules and

Physics
2 answers:
Aleksandr-060686 [28]3 years ago
5 0
Either 25% or 75%. does it to how much is wasted or the difference in the input and waste?
otez555 [7]3 years ago
3 0

Answer: A. 25%

Explanation: Ap3x

You might be interested in
Give me 1 example of complete inelastic collision​
Allisa [31]

i hope it helped thanks

4 0
3 years ago
What is an example of an organism that reproduces
RideAnS [48]
Sea anemones; Coral; Starfish; Some non-flowering plants. Strawberry; Onion; Potato. Mushrooms are an example<span> of asexually </span>reproducing organisms<span>.

hoped i helped my fellow brainily user</span>
4 0
3 years ago
Fusion occurs with atoms of elements less massive than
Nimfa-mama [501]
The answer is A. Iron.
4 0
3 years ago
Jazz is a 172 lb athlete who exercised at 7.6 METs. At this workload, what is his energy expenditure in kcals/min.? Round to the
dezoksy [38]

Answer:

Energy expenditure in K cals/min = 10 K cals /min (approximately)

Explanation:

As we know

Energy expenditure in Kcal/min=  METs x 3.5 x Body weight (kg) / 200

Given is METs=7.6

Weight of Jazz= 172lb=78.02kg

putting the values in formula,

Energy expenditure in K cals/min=  7.6 x 3.5 x 78.02 / 200

                                                       =10.38 K cals /min

                                                       =10 K cals /min (approximately)

Therefore, Energy expenditure in K cals/min by Jazz will be approximately 10 K cals /min

8 0
3 years ago
In 1986, several robotic spacecrafts were sent into space to study the Halley's Comet. Which of these statements best explains w
maks197457 [2]
No spacecraft has been built yet that was able to absorb harmful
radiations in space, change weather conditions on Earth, or destroy
meteors and comets which might strike Earth.

We should continue to send robotic spacecrafts into space
because they help discard some myths about objects in space. 
In other words, they help us learn things that we never knew before.

4 0
3 years ago
Other questions:
  • What is the velocity of 360?
    14·1 answer
  • A cart is pulled by a force of 250 N at an angle of 35° above the horizontal. The cart accelerates at 1.4 m/s2. The free-body di
    7·1 answer
  • In the context of depth perception, which of the following is a monocular cue?
    7·1 answer
  • What is the net force acting on a 0.15 kg hockey pick accelerating at a rate of 12 m/s
    10·1 answer
  • A research submarine has a 10-cm-diameter window that is 8.4 cm thick. The manufacturer says the window can withstand forces up
    8·2 answers
  • Imagine you are holding a small ball below you so that you look down on its "north pole." turn the ball in a counterclockwise di
    15·1 answer
  • Suppose that during a test drive of two​ cars, one car travels 224 miles in the same time that a second car travels 160 miles. I
    5·1 answer
  • Terangkan lokasi zaman prasejarah di Malaysia
    9·1 answer
  • What is a law in physics?​
    6·1 answer
  • If an equivalent (eq) is defined as a mole of charge, what is the concentration of ca2 in blood plasma in eq if its concentratio
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!