You lift a 45N bag of mulch? 1.2meters and carry it a distance of 10 meters how much work was done

Answers

Answer 1
Answer: W = Fxd
However, when you carry it, the actual bag of mulch isnt changing height so the only work done on the actual bag is when you lift it.
W = 45N x 1.2m
= 54J

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A hair dryer uses 72,000 joules of energy in 60 seconds what is the power of this hair dryer

Answers

Use work/time ratio.

 72,000 joules /60.0 seconds = 1,200 W.

Which force is always directed toward the center of a circle?A. normal force
B. nuclear force
C. centrifugal force
D. centripetal force

Answers

The answer is D. centripetal force
This definition of centripetal force is a force acting towards the center of an object moving in a circular motion. Acceleration is the rate of which velocity changes over a period of time. If you pick a point on say a rotating circle and find the tangential velocity at each point it goes through, the acceleration would be towards the middle. 

after the box has left the rubber band but is still moving upward, what is the passenger's apparent weight?

Answers

If the upward acceleration is equal to the acceleration due to gravity (9.8 m/s^2), then the apparent weight would be zero, indicating that the passenger is experiencing weightlessness or is in a state of free fall.

When the box has left the rubber band but is still moving upward, the passenger's apparent weight would be less than their actual weight.

The apparent weight of an object is the force exerted on it by a supporting surface, which in this case is the floor of the box. It is equal to the normal force acting on the object.

As the box accelerates upward, there are two main forces acting on the passenger: the gravitational force (weight) pulling them downward and the normal force pushing them upward. The normal force is responsible for providing the upward acceleration to the passenger.

Since the passenger is moving upward, the normal force exerted by the floor must be less than their actual weight to create the net upward force necessary for upward acceleration. Therefore, the passenger's apparent weight is reduced.

The exact value of the apparent weight depends on the magnitude of the upward acceleration and the mass of the passenger. The apparent weight can be calculated using the equation:

Apparent weight = Actual weight - (Mass of passenger * Magnitude of upward acceleration)

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If you are over-driving your headlights and you see an object ahead, you will_____. be given the right-of-way from other vehicles not be able to stop in time to miss the object need to execute a high-speed U-turn be able to stop, but may graze the object.

Answers

Answer: not be able to stop in time to miss the object

Explanation:

The phrase "Over-driving your headlights" means that a person is driving at such a speed that the vehicle's stopping distance is greater than the maximum viewable distance with the headlights on.

When this occurs, it will be impossible for the vehicle to stop moving in time to avoid an object viewed by the driver in the range of his headlights.

This is a dangerous driving practice and can be avoided by driving at reduced speeds.

Final answer:

Over-driving your headlights implies a situation where you are driving so fast that you won't be able to stop within the area illuminated by your headlights. Therefore, if you see an object in your path under such circumstances, you are likely not going to be able to stop in time to avoid hitting it. Headlights' range is usually 350 feet, and driving at a speed that requires a stopping distance greater than 350 feet is considered over-driving your headlights.

Explanation:

The phrase 'over-driving your headlights' refers to a situation where a driver is traveling at such a speed that their stopping distance is further than the distance illuminated by their headlights. Thus, if an object is within your path, you won't have enough time to stop your vehicle before hitting it, especially if you're speeding.

On most roads, the farthest your headlights can help you see ahead is around 350 feet. If you're driving faster than a speed that permits you to stop within these 350 feet, you're said to be 'over-driving' your headlights. If you're over-driving your headlights, and you see an object ahead then you will most likely not be able to stop in time to miss the object. This is because your vehicle's stopping distance will be greater than your visual distance, which is dependent on the capabilities of your headlights.

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A current is always developed in the secondary of a transformer. true or false

Answers

false. only when supply 'alternate' current in the primary.

A rectangle has a length of 5.50 m and a width of 12.0 m. What are the perimeter and area of this rectangle?

Answers

to find the perimeter of the rectangle, you do 2(a) + 2(b), so when you add 11 and 24, you get a perimeter of 35 meters.

to find the area, you multiply a and b together and get an area of 66 meters squared.