Rate of change of momentum = impact force
(m*v-m*u)/t = F
4000*20/t = 80000 (note: v is zero as it stopped)
<span>soo, t = 1 sec</span>
ANSWER: 1.6N (forth option)
EXPLANATION:
E= Force x displacement
69=F(42)
69/42 = F
F=1.64 N
Answer : 1.6N
Answer:
Explanation:
In the question given :
Pressure is constant
Therefore, Work done,
Pressure, P=1.01 × 105 Pa.
Final volume,
Initial volume,
Therefore, W=8.58\times 10^{5}\ J.
Also, Heat Given,
Also, according to First law of thermodynamics:
Hence, this is the required solution.
<span>They are emitted by the unstable nuclei of certain atoms.
That's all I could find out; Sorry I couldn't be more of an help.</span>
The force of gravity between two objects is given by:
where
G is the gravitational constant
m1 and m2 are the masses of the two objects
r is their separation
In this problem, the mass of the object is
, while the Earth's mass is
. Their separation is
, therefore the gravitational force exerted on the object is