Discuss a physical activity that benefits muscular strength and describe at least two other benefits of performing this activity.

Answers

Answer 1
Answer: Yoga- It benefits muscular strength as well as core balance and flexibility.
It also improves respiration, energy and vitality.

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When object A collides with object B and bounces back, its final momentum is ____ its initial momentum.
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Which inventor created a delivery system for electricity that was deemed safer than Thomas Edison's system? a. Henry Flagler b. George Proctor c. George Westinghouse d. Thomas DeSaille Tucker
A force of 20 N is executed to raise a rock weighing 30 N. What is the actual mechanical advantage?
a soap film is viewed in white light. if the film is much thinner than the wavelength of blue light, what is the appearance of the film?

If a cart of 4kg mass has a force of 8 newtons exerted on it what is it's acceleration

Answers

Force=mass x acceleration
Data:
mass=4 Kg
Force=8 N

8 N=4 kg * a
a=8 N/4 Kg=2 m/s²

answer: the acceleration is 2 m/s²

The Hubble telescope’s orbit is 5.6 × 105 meters above Earth’s surface. The telescope has a mass of 1.1 × 104 kilograms. Earth exerts a gravitational force of 9.1 × 104 Newtons on the telescope. The magnitude of Earth’s gravitational field strength at this location is

Answers

The gravitational field is the Force divided by the mass

Call g the gravitational fiel, F the force exerted by the earth and m the mass of the telescope.

g = F / m


g=9.1x10^4 N / 1.1 x 10^4 kg = 8.27 N/kg

Note that the unit N/kg is equivalent to m/s^2

 

The field around a solenoid has a configuration similar to the field of a long, straight wire.True
False

I feel like this is false because I know it is similar to that of a bar magnet. Right?

Answers

The statement is "The field around a solenoid has a configuration similar to the field of a long, straight wire." is false.

When a pot of water is put on a stove, the water at the top gets hot primarily by ____.a. radiation
c. convection
b. conduction
d. condensation

Certain materials can become superconductors under what conditions?
a. When it is very hot
c. Under very high pressure
b. When it is very cold
d. Under very low pressure

Answers

Answer
1. c. convection
2. b. When it is very cold

Explanation
Water like any other liquid transfer heat energy through convection. 

When a pot of water is put on a stove, the water at the top gets hot primarily by convection.

A supperconductor is a material that can conduct electric current with no resistance at all. 
The supperconductivity can be achieved under cooled temperatures. 

Certain materials can become superconductors under what conditions? When it is very cold

The first one is C. convection

Greyhounds can accelerate at 7 m/s2 at the start of a race. How much force does it take a 35 kg dog to produce this acceleration

Answers


Force = (mass) x (acceleration)              Newton's second law of motion.

Force = (35 kg) x (7 m/s²)  =  245 newtons

                                    (about  55 pounds)

Between red and green , which light ray bends the most.

Answers

In a borosilicate prism, the index of refraction of red light is 1.50917 while the index of refraction of green light is 1.51534. The index of refraction of green light is greater which means that green light bends more than red light.