This is the definition of specific heat capacity. 1000J of heat are required to raise the temperature of 1kg of the compound by 1 degree. Therefore a 1000J have been added to the block.
Answer:
Explanation:
given,
motion of polar bear
1.0 km south ; 1.0 km east ; 1.0 km north ; 1.0 km west
total time of the trip = 45 min
t = 0.75 hr
total distance travel by bear = 1 + 1 + 1 + 1 = 4 km
average speed of the bear = ?
hence, the average speed of the car is equal to 5.33 Km/h
Explanation:
The given data is as follows.
= 0.8 kg/s = 800 g,
= 1 kg = 1000 g, = (75 - T),
= T - 25
Now, according to the law of conservation of energy,
+ 30000
250.8 - 3.34T = 4.18T - 104.5 + 30
T =
=
Thus, we can conclude that temperature of the warm water stream is .
Answer:
Mechanical waves require a medium, but electromagnetic waves do not.
Multiply field strength (N/kg) by mass (kg) to get weight (N)
At the start, the car is carrying
4.7 kg * (9.8 N/kg) = 46.06 N
of fuel.
At the end, it is carrying
3.0 kg * (9.8 N/kg) = 29.4 N.
Assuming the car remains completely intact, its weight was reduced by
46.06 N - 29.4 N = 16.66 N.