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3 years ago

Explain applications

Physics

1 answer:

hoa [83]3 years ago

3 0

Answer:

See explanation

Explanation:

MRI: Magnetic resonance imaging (MRI) is a modern medical imaging technique that have proven to be invaluable in radiology because it is used to obtain pictures of the anatomy and the physiological processes of the human body. MRI scanners make use of strong magnetic fields and radio waves to obtain images of the target organs of the human body.

X-Ray: X-ray is an electromagnetic wave. It is used in medicine to examine the body in order to locate broken bones and metallic objects like bullets. It is used to detect flaws in metal castings and in airports to detect metals in baggage. It is used to investigate the structure of crystals as well as in cancer treatment.

Ultrasound: In medicine, the applications of ultrasound may be surgical, therapeutic, or diagnostic. Also, It is used to detect defects, flaws, cracks in machine parts, bridges and buildings.

Infrared Radiation : Infrared thermal-imaging cameras can be used to take pictures even in the dark. It is very useful in heat sensing. Lastly, it is used in chemistry to study chemical bonds.

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A cube of wood 15.0 cm on each side is tied to the bottom of a tank filled with water to a depth of 50 cm. The tension in the st

Elina [12.6K]

Answer:

(a). The density of the wood is $1479.48\times10^{2}\ Kg/m^3$

(b). The absolute pressure at the bottom of the tank is $1.06200\times10^{5}\ Pa$ .

Explanation:

Given that,

Side of cube = 15.0 cm

Depth = 50 cm

Tension = 6.615 N

We need to calculate the volume of the wood

Using formula of volume

$V = a^3$

$V=(15.0\times10^{-2})^3$

$V=0.003375\ m^3$

We need to calculate the density of the wood

Using buoyant force

$\rho_{w}gh=mg+T$

$\rho_{w}gh=\rho_{c}Vg+T$

Put the value into the formula

$\rho_{c}=\dfrac{\rho_{w}gh-T}{Vg}$

Put the value into the formula

$\rho_{c}=\dfrac{1000\times9.8\times50\times10^{-2}-6.615}{0.003375\times9.8}$

$\rho_{c}=1479.48\times10^{2}\ Kg/m^3$

(b). We need to calculate the absolute pressure at the bottom of the tank

Using formula of absolute pressure

$P=P_{atm}+\rho gh$

Put the value into the formula

$P=1.013\times10^{5}+1000\times9.8\times0.5$

$P=1.06200\times10^{5}\ Pa$

Hence, (a). The density of the wood is $1479.48\times10^{2}\ Kg/m^3$

(b). The absolute pressure at the bottom of the tank is $1.06200\times10^{5}\ Pa$ .

7 0

3 years ago

n the metric system the acceleration due to gravity near Earth's surface is about 9.81 meters per second per second. What is the

Anna007 [38]

Answer:

$32.2\frac{ft}{s^2}$

Explanation:

To do this conversion we have to know that:

$1ft=0.3048m$

(It is easy to find this value on physics textbooks or internet physics webpages)

So, we should convert the gravitational acceleration in the next way:

$9.81\frac{m}{s^{2}}=9.81\frac{m}{s^{2}}*\frac{1ft}{0.3048m}$

So, the meters cancel out:

$9.81\frac{m}{s^{2}}=9.81\frac{1}{s^{2}}*\frac{1ft}{0.3048}=32.18\frac{ft}{s^2}$

$9.81\frac{m}{s^{2}}=32.2\frac{ft}{s}$

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3 years ago

What is the displacement if I walk three blocks east two blocks south one block west and two blocks north

vladimir1956 [14]

Answer:

south east

Explanation:

because two step to the east then a step to the west displaces one to east still but southwards

4 0

2 years ago

What type of meter is connected in

madreJ [45]

Answer / Explanation:

Potential difference is measured using a device called a voltmeter . Just like ammeters, some types have a pointer on a dial, but most have a digital display. However, unlike an ammeter, you must connect the voltmeter in parallel to measure the potential difference across a component in a circuit.

6 0

1 year ago

Suppose you place a ball in the middle of a wagon, and then accelerate the wagon forward. Describe the motion of the ball relati

rjkz [21]

Answer:

The motion of the ball relative to the ground is stationary

The motion of the ball relative to the wagon is backwards

Explanation:

To describe the motion of the ball relative to the ground, we note that

Assuming the ball is perfectly round and rotate freely, then we have

Force on the ball due to motion of the wagon = 0 N,

Then by the law of motion, an object will remain at rest when no force is applied to it

Therefore, apart from rotation of the ball, it will remain no displacement relative to the ground.

The motion of the ball relative to the wagon

Relative to the wagon, the ball appears to be moving in the opposite direction to the wagon, that is backwards.

4 0

3 years ago

Read 2 more answers