Answer:
On Earth,
g
=
9.8
m/s
2
. So, the object's weight on Earth will be:
W
=
50
kg
⋅
9.8
m/s
2
=
490
N
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.
Why are all of the horizontal velocity arrows the same size
Answer:
The horizontal velocity of a projectile is constant, There is a vertical acceleration caused by gravity; its value is 9.8 m/s/s, down, The vertical velocity of a projectile changes by 9.8 m/s each second, The horizontal motion of a projectile is independent of its vertical motion.
Explanation:
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
PLEASE TELL ME IF I'M CORRECT!! I'LL GIVE BRAINLIEST!!!
Answer:
You are absolutely correct
Imagine that someone is injured, and their somatic nervous system is impacted. Would this be a life-threatening injury?
A.
Yes, that covers essential internal injuries.
B.
No, that is a minor part of how the body functions.
C.
Probably not since that system deals mostly with mobility.
D.
It is highly likely because that controls the brain and the spine.
Answer:
C. Probably not since that system deals mostly with mobility.
Explanation:
Which would be a good career for a someone interested in exercise physiology?
A.
cardiac surgeon
B.
physical therapist
C.
massage therapist
D.
nurse practitioner
Answer: I believe it’s physical therapist
Explanation:
Good career for a someone interested in exercise physiology is physical therapist.
What is physical therapist?Physical therapists assist persons who are ill or injured with better movement and pain management. They frequently play a significant role in the prevention, rehabilitation, and treatment of individuals with long-term illnesses, injuries, or disorders.
Physical therapists evaluate each patient before creating a therapy plan to enhance their mobility, lessen or manage pain, and regain function.
The physiology of physical exercise is known as exercise physiology. It is one of the allied health fields that incorporates research on both acute and long-term adaptations to exercise.To identify the greatest feasible exercise and fitness routine, exercise physiologists examine a patient's medical history.
Good career for a someone interested in exercise physiology is physical therapist.
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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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List down at least 3 significance of occurrence of earthquakes
I sent it to your messenger
Directions: Using the T-chart below, compare balanced forces and unbalanced forces.
Balanced Forces
Unbalanced Forces
(can i please get three examples for each)
Explanation:
unbalanced: a turning vehicle, apple falling on the ground, kicking a ball
balanced: floating on water, fruit hanging from tree, tug of war equally balanced teams
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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PLEASE ANSWER NEED HELP!!!!!!!! PLEASE THE CORRECT ANSWER!!!!!!
Jinan has high cholesterol and wants to do what he can to improve it through his diet. What would be the BEST thing for him to increase in his diet to address this issue?
A.
sugars
B.
protein
C.
carbohydrates
D.
unsaturated fat
PLEASE NO LINKS
Answer:
carbohydrates
Explanation:
PLEASE PLEASE PLEASE HELP ME WITH THIS QUESTION!!!!!
that's the answer, I think it's helpful
particles in a gas ____ and move___at high speeds
Answer:
gas vibrates and moves freely at high speeds.
Explanation:
Hope this helps
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.
An electrical spark, such as lightning, generates electromagnetic radiation over a wide range of wavelengths. How much longer will a pulse of radio energy take to travel between two detector stations 100 m apart than a pulse of ultraviolet radiation from the same spark
Answer:
The time is identical, since both pulses travel at the speed of light.
Explanation:
4. A carousel has a radius of 4 meters & turns at a rate of 1 revolution every 10 seconds. Allen is riding a horse on the edge of the carousel. Beth is riding a horse 2 meters from the center of the carousel.
a) What is Allen’s angular speed in rad/s?
b) What is Beth’s angular speed in rad/s?
c) What is Allen’s linear speed in m/s?
d) What is Beth’s linear speed in m/s?
plz answer on each a,b,c,d Questions
thanks
(a) The angular speed of Allen is 0.628 rad/s.
(b) The angular speed of Beth is 0.628 rad/s.
(c) The linear speed of Allen is 2.512 m/s.
(d) The linear speed of Beth is 1.256 m/s.
The given parameters;
radius of the carousel, r = 4 mspeed, ω = 1 rev per 10 secondsposition of Allen from the center of the carousel, r = 4 mposition of Beth from the center of the carousel, r = 2 mThe angular speed of Allen is calculated as follows;
[tex]\omega = \frac{1 \ rev}{10 \ s} \times \frac{2\pi \ rad}{1 \ rev} \\\\\omega = 0.628 \ rad/s[/tex]
The angular speed of Beth is calculated as follows;
[tex]\omega = \frac{1 \ rev}{10 \ s} \times \frac{2\pi \ rad}{1 \ rev} \\\\\omega = 0.628 \ rad/s[/tex]
Allen and Beth make the same number of revolutions every 10 seconds, hence their angular speed is the same.
The linear speed of Allen is calculated as follows;
[tex]v = \omega r\\\\v = 0.628 \ rad/s \times 4 \ m\\\\v = 2.512 \ m/s[/tex]
The linear speed of Beth is calculated as follows;
[tex]v = \omega r\\\\v = 0.628 \ rad/s \times 2 \ m\\\\v = 1.256 \ m/s[/tex]
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a 900 N crate slides 12m down a ramp that makes an angle of 35 degrees with the horizontal. If the crate slides at a constant speed, how much thermal energy is created
The thermal energy created when the crate slides at the given distance is 6,192.8 J.
The given parameters;
weight of the crate, W = 900 Ndistance traveled by the crate, d = 12 mangle of inclination, θ = 35⁰The thermal energy created is the energy lost due to friction and it is calculated as follows;
[tex]W = \mu F_n d[/tex]
where;
[tex]\mu[/tex] is the coefficient of friction
The coefficient of friction is calculated as;
[tex]\mu = tan(\theta)\\\\\mu = tan(35)\\\\\mu = 0.7[/tex]
The work done against friction is calculated as;
[tex]W = \mu F_n d\\\\W = \mu (Wcos\theta ) d\\\\W = 0.7 \times 900 \times cos(35) \times 12\\\\W = 6,192.8 \ J[/tex]
Thus, the thermal energy created when the crate slides at the given distance is 6,192.8 J.
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