Answer:,20,15.7
Explanation:
Frequency is defined as the number of revolutions made the object in unit time.
Given that it takes minutes revolutions.
So, revolutions can be completed in minute.
So, revolutions can be completed in a second.
So,frequency is
Period of a object is the inverse of frequency.
Inverse of frequency
So,period is .
Speed of car is the given by the ratio of distance covered in one revolution to the time period.
Distance travelled in one period is where is the diameter.
Given that
So,distance travelled in one revolution
Time period is .
Speed is
'D' would do the job ... When you subtract the protons from the mass,
what you have left is neutrons. (The electrons can be ignored. It takes
around 1840 electrons ! to add the mass of a single proton or neutron !)
I don't know it for a fact, but I'd be surprised if the process is really that
simple. I mean, it starts out with knowing the atomic mass, and then
knowing the number of protons in the nucleus. Each of those is a
whole complex problem in itself.
A change in temperature can cause the a change in state of matter.
A physical change is where substance does not change where as in chemical reaction substance is changed and forms another form.
Answer:
Scientific theories allow scientists to make predictions.
Answer:
160 km
Explanation:
g = 9.8 m/s^2, g' = 9.3 m/s^2
Let h be the height from ocean level.
Use the formula for acceleration due to gravity at height.
g' = g (1 - 2h/R)
The radius of earth is 6400 km
9.3 = 9.8 ( 1 - 2 H / R)
0.05 = 2 h/R
h = 0.05 × 6400 / 2 = 160 km