3 years ago

An airplane travels 3,260 kilometers in 4 hours. What is the airplane’s average speed?

Physics

1 answer:

OLga [1]3 years ago

4 0

3260÷4=815 which is you average seed

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A video game regularly costs $29.95 is on sale for 15% off. About how much is the sale price of the game is you include 8% sales

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3 years ago

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nataly862011 [7]

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Explanation:

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3 years ago

A solid ball and a hollow ball, each with a mass of 1.00 kg and radius of 0.100 m start from rest and roll down a ramp of length

nordsb [41]

Answer:

The solid ball and hollow ball both will reach the bottom with the same speed.

Explanation:

The speed of the solid and hollow balls is independent of the mass and the radius. A solid and hollow ball experience same speed on a given incline.

The speed can be calculated as

v = √(10/7)gh

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sinθ = h/L

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3 years ago

Consider a constant density gas flowing steadily over an airfoil. Far upstream the velocity is V0. Halfway along the top surface

Mashutka [201]

Answer:

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3 years ago

What is the intensity in W/m2 of a laser beam used to burn away cancerous tissue that, when 85.0% absorbed, puts 470 J of energy

Advocard [28]

Answer:

26036485.6433 W/m²

Explanation:

E= Energy = 470 J

t = Time = 4 seconds

d = Diameter = 2.6 mm

Power is given by

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

Intensity is given by

$I=\dfrac{P}{\pi r^2}\\\Rightarrow 0.85I=\dfrac{E}{t\dfrac{\pi}{4} d^2}\\\Rightarrow I=\dfrac{470}{0.85\times 4\times \dfrac{\pi}{4}\times (2.6\times 10^{-3})^2}\\\Rightarrow I=26036485.6433\ W/m^2$

The intensity of the laser beam is 26036485.6433 W/m²

8 0

4 years ago