WILL MARK BRAINLIEST
When an arrow hits its target, what type of energy will it have?
A. gravitational
B. elastic
C. mechanical
D. chemical
Answers
Answer
Mehanical energy
Please. Mark brainlist
I am not very much sure but I will give a small explanation here
A bow and arrow possesses mechanical energy. When the arrow is drawn it has potential energy and when it is released it produces a force to propel the arrow towards the aimed target, therefore giving the arrow kinetic energy. When you combine both energies it creates mechanical energy
Related Questions
Can you freeze sound waves
Answers
Answer:
I believe it's not possible
Explanation:
there's really no way I currently know of that we can do that so I suppose no.
A protein-digesting enzyme when mixed with starch solution would
Answers
Answer:
It would produce fat..........
The diagram below shows a wave. The feature of the wave are labeled A, B, C, and D. Which label identifies the wavelength?
Answers
According to the given diagram, the c identifies the wavelength of the curve. Hence, option C is correct.
What is wavelength?In order to characterize waveform signals that are transmitted across wires or into space, the term "wavelength" is used to refer to the separation between two identical positions (adjacent crests) in succeeding cycles. Typically, this length in wireless systems is measured in meters (m), centimeters (cm), or millimeters (mm) (mm). When describing the wavelength of infrared (IR), visible light (UV), and gamma radiation, units of 10-9 nanometers (nm) or angstroms (10-10 m) are more usually used.
The relationship between frequency and wavelength is inverse, with frequency being the number of wave cycles per second. A signal's wavelength shortens as its frequency rises, or we may say that the relationship between wavelength and refractive index is inverse.
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Bill and Nageen have each built an electric motor and they are testing them by having them lift boxes. Bill's motor lifts a box 0.39 metres in 2 seconds. Nageen's motor lifts the same box 0.35 metres in 2 seconds. Whose motor has applied more power to the box?
Answers
Answer:
Bill's motor
Explanation:
Bill's motor lifts a box 0.39 metres in 2 seconds.
Nageen's motor lifts the same box 0.35 metres in 2 seconds.
Power = Work done/time
or
[tex]P=\dfrac{mg\times h}{t}[/tex]
Power of bill's motor,
[tex]P_1=\dfrac{m\times 9.8\times 0.39}{2}\\\\P_1=1.91m\ Watts[/tex]
Power of Nageen's motor,
[tex]P_2=\dfrac{m\times 9.8\times 0.35}{2}\\\\P_2=1.71m\ Watts[/tex]
So, Bill's motor applied more power to the box.
c) 12g/cm d) 0.2g/cm
6. A girl of mass 40kg wears heels of an area of 1cm2 in contact with the ground,
the pressure on the ground (g=9.8 m/s2)
ad Y10-4na
b) 4x104 na
c) 4 105
da 105
Answers
Explanation:
Is this ok?......I have got the answer in pascals.
Consider the four masses. Describe the motion of the masses if you used THE SAME amount of force to move each one over THE
SAME time
A)
The greatest mass would not move at all.
B)
All four masses would move the same distance,
The lower the mass, the greater the distance the mass would move,
D)
The greater the mass, the greater the distance the mass would move,
Answers
Answer:
option c...................
if itis heavier, u have to push hardier or it to move the same distance.
How do we know when an object is in static or dynamic equilibrium?
Answers
Answer:
First Condition of Equilibrium
Explanation:
This means that both the net force and the net torque on the object must be zero. The condition Fnet=0 F net = 0 must be true for both static equilibrium, where the object's velocity is zero, and dynamic equilibrium, where the object is moving at a constant velocity.The sum of the forces on it in each direction is zero. The sum of the torques on it in each direction is zero. Its linear momentum is zero.Explain the benefits of understanding sound waves properties in real life.
Answers
Answer:
The vibrations from sound waves cause our ears to send signals to our brains to create sound. The speed of sound waves will determine the sound's pitch, or how high or low something sounds. Sound waves are important because they allow us to hear important messages and emergency signals to protect ourselves.
Explanation:
I hope this helps :)
Example 4:
Find the index of refraction for diamond if the speed of light in diamond is 1.24 x 10m/s
Use the proper FORMAT
Answers
Answer:
Given speed of light in diamond =1.24*10m/s
speed of light (c) =3*10^8m/s
refractive index of diamond =3*10^8/1.24*10=2.41*10^7m/s
A saw becomes warm when it is used to cut a log of wood.Give reason
Answers
Explanation:
a part of the kinetic energy of the sun is converted into heat as it cuts the log of wood it is due to this heat that becomes worm .Thus, kinetic energy of such changes into heat
Thermal energy involves the___stored in a system
A. Friction
B.electric current
C.heat
D.electromagnetic waves
Pls help
Answers
Answer:
c. heat
Explanation:
thermal energy IS heat energy
The answer is C. Heat
A balloon of hydrogen is put into to pressure chamber. The initial pressure and volume of hydrogen is 1 atm and .5 cm3. The pressure of the chamber is increased to 2 atm. What is the new volume? Use the formula for Boyle's Law: P1V1 = P2V2
Answers
Answer:
2.5 cm³
Explanation:
Use Boyle's Law
1×5=2×V
5=2V
V=5/2=2.5 cm³
Plz help in this question.
Answers
Answer:
The area of the liquid surface does not affect the pressure.
If you were in charge of designing a wire to carry electricity across your city, state or province, which of
the following properties would be most important for your wire to have?
Should it be thick or thin, aluminum or nichrome, buried underground or installed out in the sun
Pleaseeee I need this done I beg Ill give brainiest and make sure its at least on paragraph if not then at least as many sentences as you can please
Answers
Answer:
Thin, aluminium and buried underground.
Explanation:
When it comes to electrification of a state or province, some characteristics of the wire to use must be considered. This would help to minimize and avoid power loss and wire burns.
i. The wire to use should be thin, and a quite number can be twisted one against the other so as to increase the surface area for heat dissipation.
ii. Aluminium wire is more preferable for this project. It has a high melting point, and reduces energy loss.
iii. Burying the wire underground through an insulator is the best choice, though expensive but would preserve the wire from external influence.
462.3 cm - 25.74 cm
Answers
Answer:
436.56 centimeters
Explanation:
heart this! My answer is correct, I search it.
Eiman connects eight 12Ω lamps in series. What is
the total resistance of the circuit?
please help
Answers
Answer:
Total resistance is 96 ohm
Explanation:
Rs = R1 +R2 + R3 + R4 + R5 +R6 + R7 + R8
where R1 is lamp 1
R2 is lamp 2 n so on
Rs = 12 + 12 +12 + 12 +12 + 12 + 12 + 12( as each lamp is of resistance 12)
Rs = 96 ohm
GOOD LUCK FOR THE FUTURE! :)
Leigh Ann is learning about the differences between inherited traits and learned behaviors in organisms. For example, she knows that being able to read is learned while having straight or curly hair is inherited. How does a person inherit a trait such as hair texture?
A. Through the storage of extra fat during birth
B. Through DNA that is passed from parents to offspring
C. Through the breakdown of different proteins during birth
D. Through different viruses that are passed from parents to offspring
Answers
Answer:it the letter b I was just finished with this test
Explanation:
2. a) A student obtained ice at 0°C from a refrigerator and placed it in a beaker on a
bench. After 4 minutes, the temperature rose to 4°C. State the changes that would be observed in the water in terms of;
(i) volume
(ii) mass
(iii) density
(b) Sketch a graph of density against temperature if the ice is warmed from 0°C to
8°C.
Answers
Answer:
2 4
Explanation:
because
Weight is best described as
A) an object’s resistance to acceleration.
B) what causes an object to fall.
C) the downward force exerted on objects due to gravity.
D) a force solely dependent on an object’s mass.
Answers
Answer:
d
Explanation:
Answer:
d
Explanation
a force solely dependent on the object’s mass
an object that is accelerating may be
Answers
It must be either speeding up, or slowing down, or turning. There are no other possibilities.
The amount of matter in an object is mass or weight
Answers
Answer:
mass
Explanation:
a chef is testing out a new iron cookware. He knows that iron specific heat of 445 j/kg Celsius. he heats a 2kg iron pan on a stove for 5 minutes and finds that the temperature of the iron skillet has increased by 150 degrees Celsius. calculate the amount of heat energy absorbed by the pan.
Answers
Answer:
[tex]\boxed {\boxed {\sf 133,500 \ Joules}}[/tex]
Explanation:
Since we are given the specific heat, mass, and change in temperature, we should use this formula for heat energy.
[tex]q=mc \Delta T[/tex]
The mass is 2 kilograms. Iron's specific heat is 445 Joules per kilogram degree Celsius. The temperature increases by 150 degrees Celsius.
[tex]m= 2 \ kg \\c= 445 \ J/kg \textdegree C\\\Delta T= 150 \textdegree C[/tex]
Substitute the values into the formula.
[tex]q= (2 \ kg)( 445 \ J/kg \textdegree C)(150 \textdegree C)[/tex]
Multiply the first two numbers. The kilograms will cancel.
[tex]q= 890 \ J/\textdegree C (150 \textdegree C)[/tex]
Multiply again. This time the degrees Celsius cancel.
[tex]q= 133, 500 \ J[/tex]
The pan absorbs 133,500 Joules of heat energy.
State the Law of Electric Charges in your own words.
Answers
[tex] \\ [/tex]
According to Coulomb, the electric force for charges at rest has the following properties: Like charges repel each other; unlike charges attract. Thus, two negative charges repel one another, while a positive charge attracts a negative charge. The attraction or repulsion acts along the line between the two charges.
Things that are negatively charged and things that are positively charged pull on (attract) each other. This makes electrons and protons stick together to form atoms. Things that have the same charge push each other away (they repel each other). This is called the Law of Charges.
[tex] \\ [/tex]
Hope It Helps!
Sally's mass on Earth is 50 kg. What is her mass on the moon?
Answers
Answer:
Being that the moon has a gravitational force of 1.622m/s 2, we multiply the object's mass by this quanitity to calculate an object's weight on the moon. So an object or person on the moon would weigh 16.5% its weight on earth. Therefore, a person would be much lighter on the moon. Conversely, a person is 83.5% heavier on earth than on the moon.
Explanation:
does this help
Sally's mass on Moon is: C. 50 kg
Mass is a measure of the amount of matter that an object or a body is typically made up of. The standard unit of measurement for the mass of an object is kilograms (kg).
Regardless of the location of a person, an object at any given time, mass (amount of matter that they're made up of) is always the same i.e constant.
This ultimately implies that, whether you're on the Moon, space, planet Earth or any other place; your mass would always remain the same or constant.
In this scenario, Sally's mass on Earth is 50 kg. Thus, we can deduce that her mass on Moon would be 50 kg.
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A block of lead has dimensions of 4.50 cm by 5.20 cm by 6.00 cm. The block weighs 1587 g. From this information, calculate the density of lead.
Answers
Answer:
11.3 g/cm^3
Explanation:
density = mass/volume
volume of rectangular prism = length * width * height
volume = (4.50 cm)(5.20 cm)(6.00 cm) = 140.4 cm^3
mass = 1587 g
density = (1587 g)/(140.4 cm^3)
density = 11.3 g/cm^3
Why is visible light safe to humans ?
Answers
Explanation:
Visible light is the range of electromagnetic waves that humans can see. Anything that glows or gives off light makes waves of what we call visible light. The sun, light bulbs, candles and fire are all things that people automatically think of when it comes to light, but visible light comes from many sources and in many colors. Some other sources of visible light include: television and computer screens, glow sticks, and fireworks
Answer:
Visible light is visible because most of the gases in planetary atmospheres (oxygen, nitrogen, carbon dioxide, methane, ammonia…) are transparent to those wavelengths. We evolved to see those wavelengths because the atmosphere in visible light is transparent.
Explanation:
Anita rides a bicycle to market 60km from her house in 3.5 hours. What is Anita’s
speed?
Answers
60 divided by 3.5. The km divided by the hour gives the km per hour. Hope that helped :)
Can someone help me answer this question what type of rock will form in this type of environment. Pls don’t guess and actually answer it
Answers
Answer:
Looks like A but I'm not sure.
Explanation:
dont take my word for it I might be wrong
Answer:
deforestación en el mundo es incontrolable
In music, the note G above middle C has a frequency of about 392 hertz. If the speed of sound in the air is 340 m/s, what is the approximate wavelength of this note?(1 point)
1.2 meters
8.7 meters
0.87 meters
0.0026 meters
Answers
Answer:
0.87 meters
Explanation:
Why isn't the story of Israel not fully accurate?
Answers
Answer:
wait what do you mean? And why is this in physics?
Is this about the iron dome or something biblical?
Explanation:
Answer:
the story of Israel is part of the Bible that's what what you're your lesson is
Explanation: