<span>If its 0.4%, the answer will be 0.4
or else it will be 40. </span>
the correct choice is
D. It immediately stops accelerating, and continues moving at the velocity it had when burnout occurred.
as soon as the rocket runs out of fuel, its engine stops firing gases which is mainly responsible for the acceleration of the rocket. hence the rocket stops accelerating. also, since there is no gravity or air resistance , there is no net force on the rocket after it runs out of the fuel. hence
a = acceleration = 0
we know that , at no acceleration , object moves at constant velocity. hence the rocket keeps moving at the velocity it had when burnout occured.
Answer:
(a) 230.4 N
(b) 
Explanation:
Charge on a proton, q = 
Distance between the two protons, d = 1 femto meter = 
(a) By use of coulomb's law, the force between the two protons is given by
Where, k is the Coulombic constant = 9x 10^9 Nm^2/C^2
So, the force between them is given by
F = 230.4 N
(b) Acceleration is the ratio of force to the mass of proton.
the mass of proton, m = 1.67 x 10^-27 kg
So, acceleration
Answer:
The temperature and volume of a gas are directly proportional when pressure is constant.
Explanation:
Charles's Law was proposed by a French chemist, Jacques Charles. The law states that "The volume of a fixed mass of a gas varies directly as its absolute temperature if the pressure is constant".
The law shows the relationship between volume and temperature at a constant temperature. It is mathematically expressed as:
V∝T(P,n constant)
Answer:
a) 4.9W b) 3.82W
Explanation:
Stefan-Boltzmann law of radiation formulae:
Q/t (W) = sigma* e*A*T^4
Sigma = 5.67*10^-8 j/sm^2K^4 (Stefano Boltzmann constant)
e = emissivity
T = absolute temperature in kelvin and A = area in m^2
a) Q/t = 140/10000(m^2) * 0.87* 5.67* 10^-8* (290^4) = 4.9W
b) without hair the
Q/t = 140/ 10000(m^2) *0.68* 5.67* 10^-8* (290^4)
= 3.82W
