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2 years ago

When an ice cube in a glass of water melts, the water level _____. A. remains the same B. rises C. falls

Physics

2 answers:

antiseptic1488 [7]2 years ago

7 0

When the ice is melting it come to liquid state ( water) , so the water level will rise

tensa zangetsu [6.8K]2 years ago

6 0

A. The water level Remains the same

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Closed path that electric current follows

allochka39001 [22]

The closed path of an electric current is called the CIRCUIT.

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3 years ago

What is the purpose of the magnetic field in a cathode ray tube?

andre [41]

Answer:

In order to determine if the cathode ray consisted of charged particles, Thomson used magnets and charged plates to deflect the cathode ray. He observed that cathode rays were deflected by a magnetic field in the same manner as a wire carrying an electric current, which was known to be negatively charged.

Explanation:

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2 years ago

A plastic tube placed from the ventricles of the brain to the peritoneal cavity in order to continuously remove excess cerebrosp

irina1246 [14]

Answer:

ventriculoperitoneal

Explanation:

A VP or ventriculoperitoneal shunt is a medical equipment or a device which is used to relieve pressure from the brain that is caused by the accumulation of fluid in the brain. Ventriculoperitoneal shunting is a medical procedure that is primarily used to treat a condition known as hydrocephalus. This condition occurs when the more cerebrospinal fluid (CSF) gets collected in the ventricles of the brain than required.

Hence the answer is ---

ventriculoperitoneal

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2 years ago

IP A spark plug in a car has electrodes separated by a gap of 6.5×10−2 in . To create a spark and ignite the air-fuel mixture in

emmainna [20.7K]

Answer:

a.) $V=5283.2 \ V$

b.) $V=4064\ V$

Explanation:

<u>Electric Field and Potential Difference</u>

There are several conditions that must be met for a spark to be created into an air gap. Once the physical conditions are fixed, a minimum electric field is necessary for the spark to be initiated. Let s be the separation between the electrodes and V their potential difference. The electric field is

a.)

$\displaystyle E=\frac{V}{s}$

Solving for V

$V=E.s$

The separation is

$s= 5.5\cdot 10^{-2}\ in=0.001651 \ m$

Thus the potential difference is

$V=3.2\cdot 10^{6}\ V/m\times 0.001651 \ m$

$V=5283.2 \ V$

b.) If the separation was greater, the applied voltage needs to be greater if the electric field has to be constant. One possible measure to keep electrodes as close as possible is to build them as sharp edges. It gives the spark an easier path to travel to.

If the separation is 0.05 inches =0.00127 m

$V=3.2\cdot 10^{6}\ V/m\times 0.00127 \ m$

$V=4064\ V$

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3 years ago

In 5 seconds a car moving in a straight line increases its speed form

marusya05 [52]

Answer:

10,800 m (^2)

Explanation:

<u>234,000 m/s - 180,000 m/s</u> = 10,800 m (^2)

5 0

2 years ago