The relation of the temperature and pressure of gas is proportional; if the temperature raises, the pressure will raise at the same rate.
All you would do is for a, 10 times 2 is 20 so it would be 20-dB
For b, 10 times 4 is 40 so it would be 40-dB
For c, 10 times 8 is 80 so it would be 80-dB
Here start with this, I made an drawing. U like it :)
Answer:
This ball will attain the same range at 60°.
Explanation:
Projectile motion: when an object is thrown in such a way that it form an angle with horizon, the force act on it that is the acceleration due gravity. This type of motion is known as projectile motion.
Range: The horizontal distance is covered by an object.
Range
u = initial velocity = 40 m/s
θ = 30°
g = gravity =9.8 m/s²
Next,
Range and u = 40 m/s
This ball will attain the same range at 60°.
Answer:
6m
Explanation:
The initial potential energy of the block P.E =mgh
where mass m = 3kg
g= 9.81 m/s2
h = 2m
Hence P.E = 3*9.81*2 = 58.8 Joules
This energy converts to kinetic energy when the block is released from the top
K.E =
Solving for v, we obtain 6.26 m/s
The acceleration of the block by Newton's second law of motion,
ma = (μk)*mg
where μk = 0.1
Hence, a = 0.1*9.81 = 0.98m/s/s
Applying Newton's second equation of motion to solve,
where u = 0 m/s (released from rest0
Hence,
Solving for s,
s= 20m
Therefore, the distance after two complete cycles = 20 -2(7) = 6m