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3 years ago

A current of 4 ampere flows in a wire of resistivity 60 ohm calculate power

Physics

2 answers:

Reil [10]3 years ago

7 0

The answer is 240 Volt

ohaa [14]3 years ago

4 0

Plz see the attachment....

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Help me pls its for my science class i need to show my work

Lostsunrise [7]

Answer:

P = 5880 J

Explanation:

Given that,

The mass of the block, m = 30 kg

The block is sitting at a height of 20 m.

The block will have gravitational potential energy. The formula for gravitational potential energy is given by :

$P=mgh\\\\=30\times 9.8\times 20\\\\=5880\ J$

So, the required potential energy is equal to 5880 J.

6 0

3 years ago

Which surface exhibits the highest albedo measurement

k0ka [10]

Fresh snow is the surface that exhibits the highest albedo measurement.

8 0

3 years ago

A fall thrown vertically upwards with a speed

Anna71 [15]

Answer:

Height of tower = 480 meter

Explanation:

Given:

Initial velocity = 20 m/s

Time taken to reach ground = 8 second

So,

Final velocity = 0 m/s

Acceleration due to gravity = 10 m/s²

Find:

Height of tower

Computation:

s = ut + (1/2)(g)(t)²

s = (20)(8) + (1/2)(10)(8)²

s = 160 + (1/2)(10)(64)

s = 160 + (10)(32)

s = 160 + 320

s = 480 meter

Height of tower = 480 meter

5 0

3 years ago

Sixty-three joules of heat are added to a closed system. The initial internal energy of the system is 58 J, and the final intern

MakcuM [25]

I posted this because I got it correct. The answer is 28J.

5 0

3 years ago

Read 2 more answers

Radio waves of frequency 1.667 GHz arrive at two telescopes that are connected by a computer to perform interferometry. One port

exis [7]

Answer:

constructively

Explanation:

c = Speed of light = $3\times 10^8\ m/s$

$\nu$ = Frequency = 1.667 GHz

$\Delta x$ = Path difference = 1.08 m

Wavelength is given by

$\lambda=\frac{c}{\nu}\\\Rightarrow \lambda=\frac{3\times 10^8}{1.667\times 10^9}\\\Rightarrow \lambda=0.17996\ m$

Path difference is given by

$\Delta x=m\lambda\\\Rightarrow m=\frac{\Delta x}{\lambda}\\\Rightarrow m=\frac{1.08}{0.17996}\\\Rightarrow m=6.00133\approx 6$

As the integral multiple of wavelength gives path difference the waves will combine constructively.

The value of m is 6

6 0

4 years ago