Molecular Physics | Thermodynamics Answers

At t = 0.0s, a runner is moving forward (in the positive direction along the x-axis) at a speed of 7.0 m/s. For 2.0 s the runner accelerates to his left at 0.50 m/s2 and backward at 1.0 m/s2. what is the runners position at t = 2.0 s in terms of the component directions (forward/back and left/right)?

A human hair is approximately 56 µm in diameter.
Express this diameter in meters.
Answer in units of m.

Good day I have two questions I need help ASAP.

A car travels 40.0km in 30 minutes then 80.0 km in 40 what is the resultant displacement,avaerage speed and average velocity?

An airplane flies south at the speed of 50 ms in still air what is the resultant velocity of the airplane if the wind is blowing east at 10ms ?

Determine the density of oxygen at 150,000 Pa pressure and Temperature = 27°C. State your answer to nearest 0.001 kg/m3, follow the standard rounding rules in stating answer, and do not attempt to write the units. Take the molar mass of molecular oxygen to be 32 g/mol, R=8.31 JK-1mol-1 and take the absolute zero to be -273°C.

a car is speeding up and has an instantaneous speed of 1.17 m/s when a stopwatch reads 11.6 s. it has a constant acceleration of 2.36 m /s^2. what change in speed occurs between t=11.6 and t=13.0 s?

What is the truth between heat and temperature?

A.heat is a unit of measurement
B.temperature is a energie
C.temperature is a measurement for intensity of heat

Prove that ‘A reversible process is never attained in practice. It can only be approached’

while passing a slower car on the highway, you accelerate from 19.8 m/s to 27.0 m/s in a time of 10.9s. how far do you travel during this time? what is your magnitude of acceleration?

A swimmer float in a still water to a distance of 5 kilometer on getting to the bank of the river the waves moves to the left hand side to a distance of12 kilometer