Answer:
u= 755 m/s
Explanation:
Lets take
Velocity of bullet = u m/s
The velocity of system after collision ,v= 5 m/s
m= 10 g = 0.01 kg
M= 1.5 kg
From linear momentum conservation( because there is no any external force on the system)
Pi= Pf
m u = ( m +m) v
0.01 x u= (1.5 + 0.01) x 5
u= 755 m/s
Answer:
Magnitude = 55
Quantity = Speed
Explanation:
We are told that the speed is 55 mph. This implies that the magnitude is 55 while the unit is mph.
Also, physical quantities are usually things that can be measured such as distance, voltage, temperature e.t.c
Answer:
50 is the answer.. the formula is load/effort
Answer:
A. As air pressure in an area decreases, the density of the gas particles in that area decreases.
Explanation:
At constant temperature, pressure and density of a gas are directly related. So if pressure decreases, density decreases.
An extensive property is a property of a substance that is dependent on the size or the amount of the substance in a system. Examples are number of moles, volume, energy, entropy, heat capacity, internal energy and mass. This would also be the same definition for extensive values. From the problem statement, the extensive values are the cost and price. These values have units of $ per gram which, obviously, dependent with the mass of the gasoline. The other values like the humidity, air pressure and the hardness are called intensive values since they are independent of the amount of the substance.