Billy drops a water ballon from the roof of his house. Since the balloon began with an original velocity of zero, how far above the ground was the balloon dropped if it took 2.5 seconds to hit the ground?

Answers

Answer 1

Answer:

The distance between the roof and the ground where the balloon water was dropped is 30.65 meters. This is computed using the free fall formula which state that the height or distance is equal to the time it takes object to hit the ground times the constant gravity. In this case, 2.5 seconds times 9.807 meter per square second will then give us the 30.65 meter.

Answer 2

Answer: the answer is 30.6 good luck!

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A business letter style that shows all text aligned to the left side of the page is calleda. full block.
b. left block.
c. justified block.
d. modified block.

Answers

Left block I believe

Electrons and protons are attracted to each other because of which fundamental force?a. nuclear
b. gravitational
c. electromagnetic
d. attraction-repulsion

Answers

Electrons and protons are attracted to each other because
they have static charges with opposite signs. The force is
the electrostatic force.

There's no such thing as "electromagnetic" force.

the answer is c. change is a property of one of the fundamentals of nature

Gazala makes the device shown in the diagram and uses it to pick up four paper clips on the point of the nail.What change would enable Gazala to pick up eight paper clips?

A) reversing the battery
B) reversing the nail and using the nail’s head
C) wrapping the wire around the nail more times
D) unwrapping several loops of the wire from the nail

Answers

Answer:

The correct answer is C.

Explanation:

To pick up four clips at the tip of the nail, wrap the wire around the nail more times than it already has. This is because the attraction force of the electromagnet is directly proportional to the square of the magnetic field that is generated by passing a current through the coiled wire. The magnetic field, in turn, is proportional to the number of turns that this wire has around the magnetic element, so it is necessary to increase the number of turns so that the strength of the electromagnet is greater.

Have a nice day!

C) wrapping the wire around the nail more times would enable Gazala to pick up eight more clips

If the breakers at a beach are separated by 5 m and hit shore with a frequency of 0.3 Hz, at what speed are they traveling?

Answers

Wave speed = (frequency) x (wavelength)

= (0.3 Hz) x (5 m)

= 1.5 m-Hz = 1.5 m/s .

A steering wheel position sensor is being discussed. Technician A says that the sensor is used to determine the direction of the steering wheel. Technician B says that the sensor detects how fast the steering wheel is turned. Which technician is correct?

a. Technician A
b. Technician B
c. Both Technicians
d. Neither Technician

Answers

Answer:

c. Both Technicians

Explanation:

Hall-effect, Photo cell, Potentiometer are used on vehicles equipped with an electronically controlled suspension

sensors are like indicators in a vehicle to give signals for both direction and the speed of the vehicle

c. Both Technicians

While discussing the effects of loose wheel bearings: Technician A says that vibration may occur while driving. Technician B says that the bearing may make noise. Who is correct? a. Technician A b. Neither A nor B c. Technician B d. Both A and B

Answers

Answer:

Option "D" is the correct answer i.e. Both Technicians A & B

Explanation:

Dear,

Loose wheel bearings can be caused on any machine.

The Following can be the reasons :

the machine or motor is installed improperly
the rotor(rotating part) of machine is not balanced
the cover get deteriorated with time
Bad manufacturer

So, when the bearings will be loose then the following can happen:

It will produce vibration in machine which can be judged by a vibration pen eg. SKF vibration pen
The vibration will also result in noise. You can check by
The machine winding if it is motor will burn-out.
Bush needs to be installed if the bearing runs loose.

Therefore, "D" is right.

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