A snail crawls 300 cm in 1 hour. Calculate the snail's speed in each of the following units. A) cm/h B) cm/min C) m/h

Answers

Answer 1

Answer: A) 300cm/h
B)1 hr=60 min
300/60=5
5cm/min
C)1m=100cm
300/100=3
3m/h

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The function of a capacitor in an electric circuit is to A. allow current flow between its plates.
B. store electric charges.
C. increase circuit power.
D. measure the amount of current in the circuit.

Answers

Answer: B. store electric charges.

Explanation: I JUST TOOK THE PF EXAM AND I GOT IT CORRECT!!!!

A crane has an arm length of 20m inclined at 30deg with the vertical. It carries a container of mass of 1 ton suspended from the top end of the arm. Find the torque produced by the gravitational force on the container about the point where the arm is fixed to the crane. Given: 1 ton = 1000 kg; neglect the weight of the arm. Hint: take the force and perpendicular distance from the point where the arm is fixed to the crane. Note: Express your answer in whole number. No unit is required for the final answer. Set your calculator in radians.

Answers

To find the torque produced by the gravitational force on the container, we need to calculate the force and perpendicular distance from the point where the arm is fixed to the crane.

First, let's calculate the force exerted by the gravitational force on the container. The weight of the container can be calculated using its mass and the acceleration due to gravity. Given that the mass of the container is 1000 kg (1 ton) and the acceleration due to gravity is approximately 9.8 m/s^2, we can calculate the force as follows:

Force = mass * acceleration due to gravity
Force = 1000 kg * 9.8 m/s^2
Force = 9800 N

Next, we need to find the perpendicular distance from the point where the arm is fixed to the crane to the line of action of the gravitational force. This distance can be determined using trigonometry.

The perpendicular distance can be calculated using the formula:

Perpendicular distance = arm length * sin(angle)

Given that the arm length is 20 m and the angle with the vertical is 30 degrees, we can calculate the perpendicular distance as follows:

Perpendicular distance = 20 m * sin(30 degrees)
Perpendicular distance = 20 m * 0.5
Perpendicular distance = 10 m

Now, we can calculate the torque using the formula:

Torque = force * perpendicular distance

Substituting the values we calculated earlier:

Torque = 9800 N * 10 m
Torque = 98000 Nm

Therefore, the torque produced by the gravitational force on the container about the point where the arm is fixed to the crane is 98000 Nm.

Structures that are especially susceptible to wind damage are?

Answers

i know the answer is manufactured homes

Nuclear power plants produce _______.a. radioactive waste that must be stored properly
b. no waste
c. radioactive waste that can be released into local water supplies
d. air pollution

Answers

Nuclear power plants produce radioactivewaste that must be stored properly. It is very impossible for a nuclear power plantto have no waste at all since lots of chemicals are used to create the processas it gives energy to other machines. Radioactive waste can not be releasedinto local water supplies since the wastes are very radioactive and may causemutation to the fishes and bioaccumulation which will affect humans as well. Itwill also cause air pollution if the chemicals are not stored properly.

Nuclear power plants produce radioactive waste that must be stored properly in other to prevent pollution and health hazards.

What is nuclear power plants?

Nuclear power plant refer to the thermal power station in which power is generated and the the heat source is a nuclear reactor. In any thermal power stations, heat is used to generate steam that spin up steam turbine connected to a generator that produces electricity.

Therefore, Nuclear powerplants produce radioactive waste that must be stored properly.

check more about nuclear power plantsfrom the link below.

brainly.com/question/2005734

Question on attachment

Answers

The idea that Jacob uses photocells for all the energy need in the park is a good idea. In this way, he is saving so much electricity because photocells are renewable source of energy. The energy can be used for a lifetime, however, its main disadvantage is that no electricity will be produced if sunlight is not present.

What is the kinetic energy of a 1.0-kg billiard ball that moves at 5.0 m/s? A. 5.0 J B. 6.5 J C. 10.0 J D. 12.5 J

Answers

The kinetic energy of a moving body can be determined from its mass and velocity of the body. The kinetic energy of 1.0-kg billiard ball that moves at 5.0 m/s is 12.5 J. Hence, option D is correct.

What is kinetic energy?

Kinetic energy is a form of energy generated in body by virtue of its motion. It is directly proportional to the mass and square of velocity of the body. The equation of kinetic energy is written as follows:

KE = 1/2 mv²

When a body starts moving its kinetic starts to increase while the potential energy drops out. However the total mechanical energy in the system will be conserved.

The mass of the billiard ball is given 1 kg and the velocity is 5 m/s. Then the kinetic energy of the ball is calculated as follows:

KE = 1/2 1 kg × ( 5 m/s )².

= 1/2 × 25

= 12.5 J.

Therefore, the kinetic energy of 1.0-kg billiard ball that moves at 5.0 m/s is 12.5 J. Hence, option D is correct.

To find more about kinetic energy, refer the link below:

brainly.com/question/12669551

#SPJ5

The formula for a kinetic energy (KE) is
KE = 0.5*m*v²

Given m = 1.0 kg, v = 5.0 m/s, so
KE = 0.5*1.0*(5.0)² = 12.5 J

The answer is D.

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