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4 years ago

A Roman centurion fires off a vat of burning pitch from

Physics

2 answers:

EastWind [94]4 years ago

6 0

Answer:

(a) 1.11sec

(b) 14.37m/s

Explanation:

U = 18m/s, A = 37°, g = 9.8m/s^2

(a) t = UsinA/g = 18sin37°/9.8 = 18×0.6018/9.8 = 1.11sec

(b) Ux = UcosA = 18cos37° = 18×0.7986 = 14.37m/s

garik1379 [7]4 years ago

5 0

Answer:

a 5.995m

b 14.54m/s

C 31.84m

Explanation:

H= u^2 sin^2x/2g

H= 18.2^2 sin^2×37/2×10

H= 331.24× 0.362/20

H= 5.995m

Horizontal component of the Vat

Ux= ucos x ; x is the angle

Ux= 18.2 cos 37

Ux= 14.54m/s

Range = u^2 sin2x/g

18.2^2 sin 74/10

Range = 318.40/10

Range = 31.84m

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A 0.45 m radius, 500 turn coil is rotated one-fourth of a revolution in 4.01 ms, originally having its plane perpendicular to a

AysviL [449]

Answer:

B = 0.126 T

Explanation:

As per Faraday's law we know that rate of change in magnetic flux will induce EMF in the coil

So here we can say that EMF induced in the coil is given as

$EMF = \frac{\phi_2 - \phi_1}{\Delta t}$

initially the coil area is perpendicular to the magnetic field

and after one fourth rotation of coil the area vector of coil will be turned by 90 degree

so we can say

$\phi_1 = NBAcos 0 = BA$

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now we will have

$EMF = \frac{NBA}{t}$

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3 years ago

Calculate the power rating of a home appliance (in kilowatts) that uses 5.1 amps of current when plugged into a 120 Volt outlet.

Mrrafil [7]

Answer:0.612 kilowatts

Explanation:

Current=5.1 amperes

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Power=5.1 x 120

Power=612

power=612 watts

power=612/1000 kilowatts

Power=0.612 kilowatts

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mezya [45]

<h3>Answers :</h3>

The gravitational field intensity (EG) or (g) is the force on a unit mass at a point in the field.

Since the force (F) on a body of mass m in a gravitational field of a body of mass M = GMm/r2 .

you can see that the force per unit mass is given by F/m. So:

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The units for EG are N kg -1 or since F = ma, F/m = a and so EG may be expressed in ms -2

Hope this will help you :))

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