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3 years ago

15

What type of electromagnetic radiation can be used as a medical tracer to diagnose disease by being sent through the body's circ

ulatory or urinary system?
A. X-rays

B. gamma rays

C. microwaves

D. ultraviolet waves

1 answer:

Stolb23 [73]3 years ago

4 0

It c.microwaves !!!!!!!!!!

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Two small insulating spheres with radius 3.50×10^−2m are separated by a large center-to-center distance of

Liula [17]

Answer:

Part (i) the magnitude E of the electric field midway between the spheres is 8.71 × 10⁵ N/C

Part (ii) the direction of the electric field is towards the negative charge

Explanation:

Given;

+q = 3.93.90μC, r = 3.50×10⁻²m

-q = −2.40μC, r = 3.50×10⁻²m

magnitude of the electric field is experienced, midway between the spheres at a distance r, r = ¹/₂ × 0.51 = 0.255 m

Electric field due to point charge is given as;

$E = \frac{F}{q} = \frac{Kq^2}{qr^2} = \frac{kq}{r^2}$

K is coulomb's constant = 8.99 x 10⁹ Nm²/C²

The positive charge on positive x-axis and the negative charge is on negative x-axis.

part (a)

The electric field due to positive charge; +q = 3.93.90μC

$E_+ = \frac{kq}{r^2}\\\\E_+ = \frac{8.99 X10^9*3.9X0^{-6}}{0.255^2}\\\\E_+= 5.3919 X10^5\frac{N}{C}$

The electric field due to negative charge; -q = −2.40μC

$E_- = \frac{kq}{r^2}\\\\E_- = \frac{8.99 X10^9*2.4X0^{-6}}{0.255^2}\\\\E_-= 3.3181 X10^5\frac{N}{C}$

From superimposition theorem

The magnitude of the electric field is;

E = E₊ + E₋

E = (5.3919 × 10⁵ + 3.3181 × 10⁵) N/C

E = 8.71 × 10⁵ N/C

Therefore, the magnitude E of the electric field midway between the spheres is 8.71 × 10⁵ N/C

Part (b)

The direction of the electric field is towards the negative charge.

7 0

4 years ago

1.5kj of energy are used every second by a microwave oven, what is the power rating of the oven?

Dennis_Churaev [7]

Power is the rate at which energy is consumed. When 1 J of energy is consumed in one second, the power consumed is 1 watt.

The microwave consumes 1.5 kJ of energy.

In joules, the energy consumed is 1500 J

$P=\frac{E}{t}$

Here, E is the energy consumed in time interval <em>t.</em>

The power rating of the microwave is therefore,

$P=\frac{1500J}{1 s} \\ =1500 W$

Thus, the power rating of the oven is 1500 W or 1.5 kW

7 0

3 years ago

Read 2 more answers

What is meant by input and output work

N76 [4]

Answer:

the x and y values

Explanation:

because on the table the x is the input and y is the output

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3 years ago

If the frequency of an electromagnetic wave increases, does the number of waves passing by you increase, decrease, or stay the s

jarptica [38.1K]

Answer:

option(d)

Explanation:

The frequency of a wave is the property of the source of wave.

The velocity of all the electromagnetic waves is same as the speed of light. It only changes as the light passes through one medium to another.

The frequency is defined as the number of waves coming out from the source in 1 second.

As the frequency of wave increases, the number of wave coming per second increases.

So, the number of waves passing by increases but the speed remains same.

Option (d)

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3 years ago

If the atomic radius of Copper is 0.128 nm, calculate the volume of its unit cell in cubic nanometers. Round off the answer to t

hodyreva [135]

Explanation:

Below is an attachment containing the solution.

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4 years ago