Answer:
The time is identical, since both pulses travel at the speed of light.
Explanation:
A student is making a model of the layers of the lithosphere. Which two model
materials would compare the relative densities of oceanic crust versus continental
crust?
A.
continental crust: steel; oceanic crust: wood
B,
continental crust: glass; oceanic crust: Styrofoarn
C.
continental crust: steel; oceanic crust: glass
D.
continental crust: Styrofoam; oceanic crust: wood
Materials that could be used to model the oceanic crust versus continent
What is the lithosphere?The lithosphere is the solid part of the earth's crust. It consists of both the soil and the rocks that are found on the earth's crust. Hence it portrays the idea of solmething that is strong.
In that sense good materials that could be used to model the oceanic crust versus continental crust are; continental crust: glass; oceanic crust: Styrofoam
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What does Boyle's law state about pressure and volume at a constant temperature and a constant pressure
Answer: Boyle's law states that when the pressure of a given mass of an ideal gas is inversely proportional to its volume at a constant temperature.
Explanation:
Answer: Provided temperature remains constant, the volume and pressure of a gas are inversely related.
Explanation: Robert Boyle discovered that as long as the temperature of a gas remains constant, the relationship between the volume and the pressure of the gas is inverse. Basically, as the volume of a gas increases, its pressure decreases. As the pressure of the gas increases, its volume decreases.
How does a planet's gravity shape the life living there? How do you think it might change the weather or climate ?
It is gravity that causes planets to orbit around each othe—for example, Earth orbits around the Sun. During the daytime of its orbit, the Sun provides sunlight that produces vegetation for creatures to eat and light for us to see. However, it can cause a thunderstorm and when it comes, it can set trees on fire releasing carbon dioxide into the atmosphere and producing global warming, melting glaciers.
Put these four parts of the electromagnetic spectrum in order from shortest to longest wavelength:
gamma, infrared, microwave, ultraviolet.
Answer:
gamma, ultraviolet. infrared, microwave
gamma, ultraviolet. infrared, microwave are the electromagnetic spectrum.
What is Electromagnetic spectrum?The range of all EM radiation types is known as the electromagnetic (EM) spectrum.
The visible light from a bulb in your home and radio waves from a radio station are two examples of electromagnetic radiation. Radiation is energy that moves and disperses as it does.
The range of electromagnetic radiation's frequencies, along with their corresponding wavelengths and photon energies, is known as the electromagnetic spectrum.
Microwaves, infrared light, ultraviolet light, X-rays, and gamma rays are the other EM radiation types that make up the electromagnetic spectrum.
Therefore, gamma, ultraviolet. infrared, microwave are the electromagnetic spectrum.
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PLEASE PLEASE PLEASE HELP ME WITH THIS QUESTION!!!!!
that's the answer, I think it's helpful
NEED HELP!!! ANSWER THESE 5 QUESTIONS FOR 25 POINTS!!!! PLEASE ANSWER!! I WILL GIVE YOU BRAINEST
1. If you “feel the burn” while exercising, what is actually going on in your body?
A.
The lungs have an excess of oxygen.
B.
You have overextended and damaged the muscle.
C.
Your heart has stopped beating for a split second.
D.
Lactic acid is taking the place of oxygen in the muscle.
2. Why does strenuous activity make the heart beat faster?
A.
A high heart rate is a sign of fitness.
B.
Exercise is the only thing that raises a heart rate.
C.
The body requires more oxygen when exercising.
D.
Any time the body is moving, the heart rate is high.
3. When lifting something heavy, which is the MOST important factor in doing it safely?
A.
the weight of the object
B.
the type of object it is
C.
your form when you are lifting
D.
your previous experience lifting boxes
4. Sasha does not have access to a gym or fitness equipment. Is it possible for him to develop a good fitness routine with what he has at home?
A.
No, he will have to spend a little money on fitness equipment to be healthy.
B.
No, if he is not willing to buy equipment, he is not really serious about fitness.
C.
Yes, but he will likely get bored with it much faster than he would gym routines.
D.
Yes, there are cardio and strength training exercises he can do without equipment.
5. Aerobic exercise is good for many of the main systems of the body. Which of the following does it NOT help with?
A.
flexibility
B.
heart health
C.
lung capacity
D.
large muscle groups
PLEASE NO LINKS
Answer:
1. If you “feel the burn” while exercising, what is actually going on in your body?
= D. Lactic acid is taking the place of oxygen in the muscle.
2. Why does strenuous activity make the heart beat faster?
= C. The body requires more oxygen when exercising.
3. When lifting something heavy, which is the MOST important factor in doing it safely?
= C. your form when you are lifting.
4. Sasha does not have access to a gym or fitness equipment. Is it possible for him to develop a good fitness routine with what he has at home?
= D. Yes, there are cardio and strength training exercises he can do without equipment.
5. Aerobic exercise is good for many of the main systems of the body. Which of the following does it NOT help with?
= A. flexibility
Determine the magnitude of the tension in the bicep if the barbell force is 450 N.
The tension in the bicep for the given weight of barbell been supported by the hand is 450 N.
According to Newton's third law of motion, action and reaction are equal and opposite.
When the barbell is held, its weight acts downwards while the force exerted by the bicep pulls the barbell upwards.
A sketch of the force diagram is presented below;
↑ Tension in the bicep
↑
⊕
↓
↓ force of the barbell
Tension in the bicep = force of the barbell
Tension in the bicep = 450 N
Thus, the tension in the bicep for the given weight of barbell been supported by the hand is 450 N.
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