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3 years ago

A group of bike riders took a 4 hour trip. During the first 3 hours, they traveled a total of 50 km, but

Physics

1 answer:

zlopas [31]3 years ago

7 0

Answer:

15km/hr

Explanation:

The average speed for the entire trip is the sum of the total distance traveled divided by the total time of the trip.

Total time = 4hr

distance for the first 3hrs = 50km

distance for the last 1hr = 10km

Total distance = 50km + 10km = 60km

Now;

Average speed = $\frac{total distance }{time taken}$

Insert the parameters and solve;

Average speed = $\frac{60km}{4hr}$ = 15km/hr

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3 years ago

Calculate the kinetic energy of a 5.0kg object moving at 4.0 m/s

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Answer:

The answer is

Explanation:

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From the question

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3 years ago

An LED with total power P tot = 960 mW emits UV light of wavelength 360 nm. Assuming the LED is 55% efficient and acts as an iso

Anit [1.1K]

Answer:

$E_0=225.09N/C$

Explanation:

We are given that

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Wavelength, $\lambda=360 nm=360\times 10^{-9} m$

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Distance,r=2.5 cm= $2.5\times 10^{-2} m$

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Intensity, $I=\frac{1}{2}c\epsilon_0E^2_0$

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Where $\epsilon_0=8.85\times 10^{-12}$

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3 years ago

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Answer:

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3 years ago

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