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4 years ago

How does under water welding work?

2 answers:

4 0

.Wet underwater welding directly exposes the diver and electrode to the water and surrounding elements. Divers usually use around 300–400 amps of direct current to power their electrode, and they weld using varied forms of arc welding.

Harrizon [31]4 years ago

3 0

it works by using a really hot substaince to melt something together.

You might be interested in

1. what factor does work depends on? 2. what factor does power depends on?

Harrizon [31]

1.motivation 2. ????

5 0

3 years ago

An airplane flies 1,592 miles east from Phoenix Arizona, to Atlanta,Georgia,in 3.68 hours. What is the average velocity of the a

Fudgin [204]

Answer:

The average velocity would be 217 m/s.

Explanation:

Average velocity is calculated by v(avg)=final velocity+inital velocity over 2

Displacement is the change in position (vector)

Velocity is calculated by s= d/t distance/time

5 0

4 years ago

Read 2 more answers

If the net work done on an object is zero, what can you determine about the object's kinetic energy?(A) The object's kinetic ene

aev [14]

Answer:

(D) The object's kinetic energy is zero.

Explanation:

Work theory

Work (W) is defined as the product of force F) by the distance (d)the body travels due to this force:

W= F*d Formula ( 1)

The component of the force that performs work must be parallel to the displacement.

Kinetic Energy Theory

Kinetic energy is the energy associated with bodies that are in motion, depends on the mass and speed of the body.

Ek =(1/2)*m*v²

The kinetic energy, Ek, is measured in joules (J), the mass, m, is measured in kilograms (kg) and the velocity, v, in meters / second (m / s).

Relationship between work and kinetic energy

A body remains at rest if the force applied is zero or if it does not move. In both cases the work will be zero.

For work and kinetic energy to have a non-zero value, the body must be in motion.

In other words, the work is equal to zero if there is no displacement, so its speed will be zero, the same as its kinetic energy.

7 0

4 years ago

A car is moving initially at 30 m/s comes gradually at stop at 900 m . What is acceleration of the car ?

ziro4ka [17]

The acceleration of the car is 0.5 meters per seconds square.

Given the following data:

Initial velocity, U = 30 m/s

Distance, S = 900 meters

Note: The final velocity (V) of the car would be zero (0) m/s when it comes to a stop.

To find the acceleration of the car, we would use the third equation of motion;

Mathematically, the third equation of motion is given by the formula;

$V^2 = U^2 - 2aS\\\\0 = 30^2 - 2a(900)\\\\0 = 900 - 1800a\\\\1800a = 900\\\\a = \frac{900}{1800}$

Acceleration, a = 0.5 $m/s^2$

Therefore, the acceleration of the car is 0.5 meters per seconds square.