If you are going 30 miles an hour in good condition, it will take how many feet to stop .
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Answer:
158400 feet per hour
Explanation:
First we find:
How many feet are in miles per hour?
Multiply your speed in miles per hour by 5,280. This is the number of feet in a mile. The result is your speed in feet per hour.
For example, 30 miles per hour times 5,280 feet per mile is 158,400 feet per hour.
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Calculate the buoyancy of the balloon as "grams lift," that is, the difference between the mass of an equal volume of dry air at the same temperature and pressure and the mass of the He in the balloon. Assume the molar mass of air is 28.8 g/mol.
Which of the following statements about matter is true? Mass and matter are always the same. Matter is made up of atoms and has mass. Mass can decrease while matter increases. Matter does not exist in the biosphere.
Answers
Answer : The momentum is, 357 kg.m/s
Explanation :
Momentum : It is defined as the motion of a moving body. Or it is defined as the product of mass of velocity of an object.
Formula of momentum is:
where,
p = momentum
m = mass = 75.0 kg
v = velocity = 5.00 m/s
Now put all the given values in the above formula, we get:
Therefore. the momentum is, 357 kg.m/s
75 kg × 5 m/sec = 375 kgm/s
Hope this helps :)
Answers
Answer:
There are two similarities between refracting telescope and compound microscope.
1. both have objective lens and eyepiece lens
2. both the lenses are convex in nature.
Explanation:
Objective lens is near the object and eyepiece is near the eye through which we can see the image.
Convex or converging lens is used to converge the rays of light coming from the object.
They both have an objective lens and an eyepiece lens.
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Kinetic energy = (1/2) (mass) (speed)²
BUT . . . in order to use this equation just the way it's written,
the speed has to be in meters per second. So we'll have to
make that conversion.
KE = (1/2) · (1,451 kg) · (48 km/hr)² · (1000 m/km)² · (1 hr/3,600 sec)²
= (725.5) · (48 · 1000 · 1 / 3,600)² (kg) · (km·m·hr / hr·km·sec)²
= (725.5) · ( 40/3 )² · ( kg·m² / sec²)
= 128,978 joules (rounded)
a
A metallic liquid substance
b
A very cold substance
c
A spherical solid metal made up of Nickel, Iron and small amount of sulfur, silicon and oxygen.
d
A flatten but thick structure similar to a granite counter top
Answers
Answer:
c
Explanation:
A spherical solid metal made up of Nickel, Iron and small amount of sulfur, silicon and oxygen.
you are welcome
Answers
After deriving the equation, we can get the formula.
T = sqrt { 4 * PI^2 /(GM) * [(R1 + R2)/2]^3 }