Answer:
2.7 Pizzas.
Explanation:
The power required to walk through 5km in 1 hour is 380W.
A watt is basically Jules per second, then we need to standardized this measurement to second.
5km/hr is equal to,
Walking by 2.5 hours is equal to a distance of,
The total energy required then would be,
Then we know that one pizza slice gives of energy, the total pizza needed are,
<em>Then you need to buy 3 pizza.</em>
Answer:
The dryer evaporate 200 - 24.74 kg of water per hour
To remove 1kg of water it need 3000 K J
So to remove, 175.26 Kg
it need 5.257x KJ of heat per hour.
Explanation:
In one hour, the amount of sugar entering = 1000 kg
w.b moisture content is defined as,
weight of water / weight of water + weight of dry
/ + x 100
+ = 1000 kg when entering
it has 20% moisture content when entering
= 0.2 x 1000 = 200 kg
when leaving it has 3% moisture content then weight of dry material
= 1000 - 200 = 800 Kg
= 0.03
= 0.03
= 0.03 x + 0.03 x 800
= 24.74 kg
When leaving the dryer, the crystals has total weight of the water = 24.74 kg per hour.
The dryer evaporate 200 - 24.74 kg of water per hour
To remove 1kg of water it need 3000 K J
So to remove, 175.26 Kg
it need 5.257x KJ of heat per hour.
Answer:
About 46 billion light years Because space expands so what we didn’t see before is what we could see now. An example could be how everyone thought Pluto was a regular sized planet but once you get a look at the bigger picture and compare it to other thing in space we now know Pluto is a dwarf planet.
Answer:
A. 5521.86 secs
B. 7680.65 m/s
Explanation:
Parameters given:
Radius of orbit of the space station, R = 6380000 + 370000 = 6750000 m
Mass of earth = 5.97 * 10^24 kg
Gravitational constant, G = 6.67 * 10^(-11) Nm²/kg²
A. Orbital period, T, can be obtained using the formula:
T²/R³ = (4 * pi²) / (G * M)
T²/(6750000³) = (4 * 3.142²) / (6.67 * 10^(-11) * 5.97 * 10^24)
T² = (4 * 3.142² * 6750000³) / (6.67 * 10^(-11) * 5.97 * 10^24)
T² = 30490944.39
T = 5521.86 secs
B. Orbital velocity, v, can be obtained by using the formula:
v² = (G * M) / R
v² = (6.67 * 10^(-11) * 5.97 * 10^(-24)) / 6750000
v² = 58992384
v = 7680.65 m/s