Engineering Middle School

Roentgens are used to measure the amount of:

uranium
fuel burned
radiation
hydrogen isotopes

Answers

Answer 1

Answer: Radiation

Explanation:

Related Questions

determine the force magnitude p required to lift one end of the 250-kg crate with the lever dolly.

Answers

Answer:

224.8125 N

Explanation:

Using the attached diagram, then we can work the answer as follows

Taking moments about 275 mm from point A

[tex]P\times 1500=\frac {mg}{2}\times 275mm[/tex]

Where m is the mass, P is the load, g is acceleration due to gravity

[tex]P=\frac {250\times 9.81\times 275mm}{2\times 1500mm}=224.8125 N[/tex]

Which ocean has the greatest average depth? A. Atlantic B. Arctic C. Indian D. Pacific

Answers

Answer: Pacific ocean has the greatest average depth and its mean depth is 4,000 meters (13,000 feet).

The ocean that has the greatest average depth is the pacific ocean. Therefore, option D is correct.

The Pacific Ocean is the largest and deepest of the Earth's five major oceans. It is located between the eastern coastlines of Asia and the western coastlines of the Americas. It is spread over a vast area of approximately 63 million square miles (165 million square kilometers).

This Ocean is known for its intense volcanic and seismic activity.  It contains the "Ring of Fire." The Pacific Ocean is home to various islands, including Hawaii, the Galapagos Islands, Tahiti, Fiji, and the Philippines.

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can i join three 12 volts batteriesto give me 24 volts output​

Answers

Answer:

YES

Explanation:

If we connect batteries in series then the output voltage is the sum of the individual voltage of each battery i.e if you connect three 12 volts batteries in series then their output voltage will be 12+12+12=36 volts, but the current rating of the batteries in series will be same of the individual battery rating in 'mah'.

But when we connect the batteries in parallel their voltage is not added  but their current rating in mah is addition of their individual rating.

So, If you want 24 volts from three 12 volts battery then you can connect two of them in series and the other one in parallel with them this will give 24 volts and the current will be addition of the two series batteries and the third which is in parallel with them. You can use this configuration if current value is not a big factor.

The phrase "positive to positive, negative to ground" is correct when jump starting a car.
A) TrueB) False

Answers

The correct answer is A; True.

Further Explanation:

This is a correct phrase that is important to learn when owning any type of vehicle. When a car battery is dead, it can usually be jump started by using another cars battery or a portable battery charger. It is extremely important to put the positive battery cable on the positive battery post. Then the negative cable will be placed on the negative car battery post and the negative ground wire can be anywhere on the car except on the battery.

The car needs to be connected properly for a few minutes before trying to start the car. This helps the car battery to get enough "juice" to start. If the battery cables are placed wrong this can cause sparks to come out of the cables/battery and cause bodily harm.

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the pressure of a car can be adjusted using what​

Answers

Answer:

tyre pressure monitoring system (TPMS)

Explanation:

It very important to inflate your tyres to the specified pressure. So cultivate a habit to check and refill them once a month. Note that you can't tell if a tyre is underinflated just by looking at it. If it actually looks underinflated in a way. And you can't really rely on a tyre pressure monitoring system (TPMS) only to keep track. Most systems only warn you when the pressure is 25 percent below the manufacturer's recommended tyre pressure.

The movement of particles from areas of high concentration to areas of low concentration is called?

Answers

Answer:Diffusion

Explanation:

Diffusion is the movement of anything from a region of higher concentration to a region of lower concentration. It is actually driven by a gradient in concentration. For example, if you fart at one end of a room eventually the gas particles will be all over the room.

What is the average speed of a car that travels 80km in 1.5 hours

Answers

Answer:53.33km/hr.

Explanation:

Average speed =

distance traveled/time taken

Average speed =80km/1.5hr=53.33km/hrs

Answer: 53.33 km/hour

Average speed = total distance covered / total time taken.

Explanation:

Given total distance covered by the car = 80 Km

Total time taken to cover the given distance= 1.5 hours

Average speed = 80 km/1.5 hours = 53.33 km/hour

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