Answer:
t should be 3.57 second
Explanation:
Formula used is v = u+at
In which v is final velocity, u is initial velocity, a is acceleration and t is time.
Substitute each of the info given into the formula and calculate.
49 = 24 + (7)t
t = 3.57s
Answer:
The period is 9.9 seconds
Explanation:
The period (T) of a mass (m) attached to a spring with spring constant k is:
(1)
So, if the mas is M we have that:
(2)
Now if we double the mass:
(3)
Because spring constant doesn’t change, we note that the term on (3) is equal to the right side of (2), so we have:
Answer:
The mass of the block, M =T/(3a +g) Kg
Explanation:
Given,
The upward acceleration of the block a = 3a
The constant force acting on the block, F₀ = Ma = 3Ma
The mass of the block, M = ?
In an Atwood's machine, the upward force of the block is given by the relation
Ma = T - Mg
M x 3a = T - Ma
3Ma + Mg = T
M = T/(3a +g) Kg
Where 'T' is the tension of the string.
Hence, the mass of the block in Atwood's machine is, M = T/(3a +g) Kg
I dont know if you mean lead instead of lean .
anyway i think <u>gamma rays</u> will penetrate further
this is because gamma rays are very penetrating , they have a shorter wave lenght than X-rays because the energy which produced them is greater .
Although both are similar but X-rays will become weaker and less penetrating when passing through a block of lead unlike the gamma rays eventhough it might reduse their intensity > but both will never stop ! .
This is a hard question!! 'cause both are similar but as i said i think gamma rays will penetrate further