-- Find the mass of all the pieces before the reaction.
-- Find the mass of all the pieces after the reaction.
-- Find the difference . . . (mass before) minus (mass after)
-- If any mass is missing, either you lost track of it, or else
it was converted to energy.
How much energy ?
(the missing mass) times c² .
Answer:
The value is 
Explanation:
From the question we are told that
The speed of each train is 
The speed of the bird is 
The distance between the trains is 
Generally the time taken before the collision occurs is mathematically represented as
=> 
=> 
The total distance covered by the bird is mathematically represented as
=> 
=>
Answer:
Volume of secret cavity = 4 x 10⁻⁶m³
Explanation:
The weight of the sculpture in air is 15.76 N
Mass of the sculpture = 1.61 kg
Mass = Volume x Density
1.61 = V x 8470
Volume of brass =1.90 x 10⁻⁴ m³
When it is submerged in water, the weight is 13.86 N.
That is
Weight of sculpture - Weight of water displaced = 13.86 N
15.76 - Weight of water displaced = 13.86
Weight of water displaced = 1.9 N
Mass of water displaced = 0.194 kg
Mass = Volume x Density
0.194 = V x 1000
Volume of water displaced =1.94 x 10⁻⁴ m³
Volume of secret cavity = Volume of water displaced - Volume of brass material
Volume of secret cavity = 1.94 x 10⁻⁴-1.94 x 10⁻⁴ = 0.04x 10⁻⁴ = 4 x 10⁻⁶m³
Answer:
indirect sunlight
Explanation:
we're receiving some sunlight, but not much, if it's winter in one place, it's summer in another
For the answer to the question above,
<span>Q = amount of heat (kJ) </span>
<span>cp = specific heat capacity (kJ/kg.K) = 4.187 kJ/kgK </span>
<span>m = mass (kg) </span>
<span>dT = temperature difference between hot and cold side (K). Note: dt in °C = dt in Kelvin </span>
<span>Q = 100kg * (4.187 kJ/kgK) * 15 K </span>
<span>Q = 6,280.5 KJ = 6,280,500 J = 1,501,075.5 cal</span>
