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
Answer:
L
D
Explanation:
At Y, horizontal force is greater than downward force so E or L. However L seems to be more appropriate since horizontal force in L is less than E
At Z, horizontal force is less than downward force so D
What's the weight of the pear ?
Weight = (mass) x (gravity) = (1 kg) x (9.8 m/s²) = 9.8 Newtons.
OK. We know there's a force of 9.8 Newtons acting downwards on the pear.
Is the pear accelerating ? No ! It's just laying there on the table.
If it's not accelerating, then we know that the net force on it must be zero.
So there must be ANOTHER force acting UPWARDS on it, to exactly
cancel out the downward force of its weight. THAT's the "normal" force ...
the upward force that the table exerts on the pear. It must also be 9.8N,
but UPwards, so that if you add it to the weight, the sum is zero.
Answer:
So let's first start with the base which is a rectangle remember that the formula to solve the area
Explanation:
Answer:
A heterogeneous mixture is simply any mixture that is not uniform in composition - it's a non-uniform mixture of smaller constituent parts.
Explanation: