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
stellarik [79]
2 years ago
14

State the law of conservation of machine​

Physics
1 answer:
laiz [17]2 years ago
3 0

Answer:

law of conservation of energy is that a perpetual motion machine of the first kind cannot exist, that is to say, no system without an external energy supply can deliver an unlimited amount of energy to its surroundings

Explanation:

Hope it helps.

Mark me as Brainliest plz!

You might be interested in
8 a Name the bones that articulate (join together) in the knee joint
Marianna [84]

Answer:

The Femur and the Tibia

8 0
3 years ago
Radar uses radio waves of a wavelength of 2.9 m . The time interval for one radiation pulse is 100 times larger than the time of
Mandarinka [93]

Answer:

145 m

Explanation:

Given:

Wavelength (λ) = 2.9 m  

we know,

c = f × λ  

where,

c = speed of light ; 3.0 x 10⁸ m/s

f = frequency  

thus,

f=\frac{c}{\lambda}

substituting the values in the equation we get,

f=\frac{3.0\times 10^8 m/s}{2.9m}

f = 1.03 x 10⁸Hz  

Now,

The time period (T) = \frac{1}{f}

or

T =  \frac{1}{1.03\times 10^8}  = 9.6 x 10⁻⁹ seconds  

thus,

the time interval of one pulse = 100T = 9.6 x 10⁻⁷ s  

Time between pulses = (100T×10) = 9.6 x 10⁻⁶ s  

Now,

For radar to detect the object the pulse must hit the object and come back to the detector.

Hence, the shortest distance will be half the distance travelled by the pulse back and forth.

Distance = speed × time = 3 x 10^8 m/s × 9.6 x 10⁻⁷ s) = 290 m {Back and forth}  

Thus, the minimum distance to target = \frac{290}{2} = 145 m

6 0
3 years ago
Use the drop-down menus to identify the parts of DNA. Label A: Label B:
love history [14]

Label A:

Nitrogen bases

Label B:

Sugar-phosphate backbone

7 0
3 years ago
Read 2 more answers
An english scientist created the first periodic table of elements
olga nikolaevna [1]
Like a then it would be A something I guess it goes like that
8 0
3 years ago
Read 2 more answers
A 49 N coconut is in a 15 m tree. What is te potential energy of the coconut?
eduard

Answer:

735 J

Explanation:

From the question given above, the following data were obtained:

Weight (W) = 49 N

Height (h) = 15 m

Potential energy =?

Potential energy is simply defined as the product of weight of the object and height to which the object is raised. Mathematically, it is expressed as:

Potential energy = weight × height

With the above formula, we can obtain the potential energy of the coconut as follow:

Weight (W) = 49 N

Height (h) = 15 m

Potential energy =?

Potential energy = weight × height

Potential energy = 49 × 15

Potential energy = 735 J

Thus, the potential energy of the coconut is 735 J

4 0
3 years ago
Other questions:
  • If a girl is standing still and holding a box, is she doing any work? Why or why not?
    15·2 answers
  • Having landed on a newly discovered planet, an astronaut sets up a simple pendulum of length 1.38 m and finds that it makes 441
    6·1 answer
  • The flywheel of a motor has a mass of 300.0 kg and a radius of 55 cm. If the motor can exert a torque of 2000.0 N . m on this fl
    15·1 answer
  • Suppose we wrap a string around the surface of a uniform cylinder of radius 38.0 cm that is supported by an axle passing through
    12·1 answer
  • Nancy needs to do a scientific investigation for her class. She is interested in pottery, plants, and basketball. Which of the f
    7·2 answers
  • White moths were found in huge numbers in the city of Birmingham. These moths could be easily camouflaged by the trees. Because
    5·2 answers
  • If a 4N weight is hung on a spring, and it extends by 0.2m, what is the spring constant (k)?
    6·2 answers
  • What does law and theory have common
    11·1 answer
  • Please guys i need help in this
    13·1 answer
  • A ball is released from the top of a tower of height h meters. it takes T seconds to reach the ground . what is the position of
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!