How does a pulley make it easier to load cargo onto a cargo ship?A.
The pulley increases the force needed to lift the load by moving it over a longer distance. It also changes the direction of the force. As the input force is applied downward, the output force is exerted upward.

B.
The pulley reduces the force needed to lift the load by moving it over a longer distance. It also changes the direction of the force. As the input force is applied downward, the output force is exerted upward.

C.
The pulley increases the force needed to lift the load by moving it over a shorter distance. It also changes the direction of the force. As the input force is applied upward, the output force is exerted downward.

D.
The pulley reduces the force needed to lift the load by moving it over a shorter distance. It also changes the direction of the force. As the input force is applied upward, the output force is exerted downward.

Answers

Answer 1

Answer:

Answer:

The pulley reduces the force needed to lift the load by moving it over a longer distance. It also changes the direction of the force. As the input force is applied downward, the output force is exerted upward.

Explanation:

When we use pulley system to pull the heavy weight then it is easier to pull the weight upwards because while we use use pulley to pull the objects then the force that is applied on the string is exerted at some angle with the vertical

Due to this we need to apply force at some angle with the vertical and it increase the output force on the object which is to be pulled

So here our effort is in downward direction to pull the object in upward direction

so correct answer will be

Answer 2

Answer: A pulley make it easier to load cargo onto a cargo ship The pulley reduces the force needed to lift the load by moving it over a shorter distance. It also changes the direction of the force. As the input force is applied upward, the output force is exerted downward. The answer is letter D

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Juanita, en medio de la cuarentena tuvo que salir de su casa por algunos artículos que necesitaba; utilizó su tapabocas y guantes, salió corriendo con velocidad de 3m/s a comprar, 3 kilogramos de arroz, dos litros de leche y 5 tapabocas. Para completar el total de las cosas, primero debe ir al supermercado que esta ubicado a 50 metros, en dirección 30 grados con respecto a la horizontal partiendo desde su casa, y de allí, salir para la droguería que se encuentra ubicada a 70 metros, dirección 150 grados desde el supermercado geográficamente con respecto a la horizontal. 1. Clasifique las cantidades escalares y las cantidades vectoriales del problema

Answers

Answer:

the scalar quantities in this exercise are: 3 kg rice, 2 liters of milk and 5 face masks, the rapides 3 m / s

the vector quantities are: the displacement to the supermarket and the drugstore

Explanation:

For this problem we are asked to find scalar quantities and vector quantities.

A scalar quantity is one that is described by a number with its units

A vector quantity is that described by a number (module), a direction and a sense, that is, they must be represented by a vector

the scalar quantities in this exercise are: 3 kg rice, 2 liters of milk and 5 face masks, the rapides 3 m / s

the vector quantities are: the displacement to the supermarket module 50 m directional 30º sense with respect to the horizontal.

The displacement to the drugstore modulo 70 m direction 150º with respect to the supermarket

If the activation energy for a given compound is found to be 103 kJ/mol, with a frequency factor of 4.0 × 1013 s-1, what is the rate constant for this reaction at 398 K?

Answers

Answer: The Rate constant is 1.209

Explanation:

in the attachment

Explanation:

Below is an attachment containing the solution.

What does a reference point provide

Answers

to check progress and direction

A precipitation reaction is a reaction between two aqueous __________ that results in the formation of a solid compound.

Answers

It is between 2 aqueous solutions that results in a formation of a solid compound

Answer:

A precipitation reaction is a reaction between two aqueous Solutions that results in the formation of a solid compound.

Explanation:

A concave lens can only form a. A. real image. B. reversed image. C. virtual image. D. magnified image.

Answers

A concave lens can only form a:

C. virtual image.

A man begins pushing a lwan mower across a lawn from a standing start. Which is true? A. The man is decreasing the kinetic energy of the lawn mower B. the man is increasing the kinetic energy of the lawn mower C. the kinetic energy of the lawn mower is not changing D. you cannot tell whether the kinetic energy of hte lawn mower is increasing or decreasing from the info given

Answers

Kinetic energy is energy in motion. With that in mind, at a stand still, an object has almost no kinetic energy. Since he is starting to push it, which is moving it, he is increasing the kinetic energy.

B

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When object A collides with object B and bounces back, its final momentum is ____ its initial momentum.

What's the answer to this problem?

12. Which of the following accurately describes semiconductor diodes? A. Point-contact diodes are more likely to be used as rectifiers than junction diodes. B. Unlike junction diodes, point-contact diodes are enclosed in a suitable casing and have terminals for connecting them to a circuit. C. Unlike point-contact diodes, junction diodes utilize a point of metal wire in contact with a single wafer of P-type or N-type material. D. Junction diodes are preferred over point-contact diodes for most purposes.