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yan [13]
3 years ago
15

The truck travels for 1.5 hours as it makes the 90 mile trip from the warehouse to the store. What was the average speed in mile

s per hour of the truck while driving to deliver the product to the waiting customers?
Physics
1 answer:
andrezito [222]3 years ago
6 0

Answer: 60 mph

Explanation:

Given

Truck takes 1.5\ hr to make 90\ mile trip

The average speed is the ratio of total distance traveled to the total time taken.

v_{avg}=\dfrac{\text{Distance}}{\text{time}}\\\\v_{avg}=\dfrac{90}{1.5}\\v_{avg}=60\ mph

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by a male sperm

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A uranium ion and an iron ion are separated by a distance of =61.10 nm. The uranium atom is singly ionized; the iron atom is dou
scoray [572]

Answer:

Explanation:

Charge on uranium ion = charge of a single electron

= 1.6 x 10⁻¹⁹ C

charge on doubly ionised iron atom = charge of 2 electron

= 2 x 1.6 x 10⁻¹⁹ C = 3.2 x 10⁻¹⁹ C

Let the required distance from uranium ion be d .

force on electron at distance d from uranium ion

= 9 x 10⁹ x 1.6 x 10⁻¹⁹ / r²

force on electron at distance 61.10 x 10⁻⁹ - r from iron  ion

= 9 x 10⁹ x 3.2 x 10⁻¹⁹ / (61.10 x 10⁻⁹ - r )²

For equilibrium ,

9 x 10⁹ x 1.6 x 10⁻¹⁹ / r² = 9 x 10⁹ x 3.2 x 10⁻¹⁹ / (61.10 x 10⁻⁹ - r )²

2 d² = (61.10 x 10⁻⁹ - r )²

1.414 r = 61.10 x 10⁻⁹ - r

2.414 r = 61.10 x 10⁻⁹

r = 25.31 nm .

4 0
3 years ago
An office heater puts out 2090 Btu (British thermal units) of energy in the form of heat per hour. Given that 1 Btu=1.055 kJ, ho
lesya692 [45]

Answer:

Total energy produced  19135.362 MJ/year

Explanation:

given details:

total energy produced = 2090 Btu per hour

1 Btu = 1.055kJ

Total energy produced per year in mega joule is = 2090*1.055 *365*24

                                                                                = 19315362 KJ/year

In mega joule per year = \frac{19315362}{1000}

mega joule per year = 19135.362 MJ/year

5 0
3 years ago
What are the basic si units for the wavelength of light?
noname [10]

Answer:

Meter (m)

Explanation:

The wavelenght of a light wave is a measure of the distance between two successive crests (or two successive troughs) of a light wave.

Since the SI units for the distance is the meter (m), then the SI unit for the wavelength is also the meter (m).

Wavelength is related to the frequency of the light wave by:

\lambda=\frac{c}{f}

where

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f is the frequency of the light

7 0
3 years ago
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