Mechanics | Relativity Answers

A bus starting from rest moves with a uniform acceleration of 0.1 m s-2 minutes.
Find
1. the speed acquired
2. the distance traveled.

How do i draw a pie chart of a truck going down hill with an increasing speed?

What is Linear Momentum?

What is the formula for density?

A particle of mass 1.2616 × 10[sup]−25[/sup] kg andcharge of magnitude 3.2 × 10[sup]−19[/sup] C is acceler-ated from rest in the plane of the page through
a potential difference of 463 V between two
parallel plates as shown. The particle is injected through a hole in the right-hand plate
into a region of space containing a uniform
magnetic field of magnitude 0.269 T oriented
perpendicular to the plane of the page. The
particle curves in a semicircular path and
strikes a detector. What is the speed of the charged particle as
it enters the region of the magnetic field?
Answer in units of m/s.

A variable voltage supply was connected in a series circuit with a 10 ohm resistor and an incandescent bulb. Assume that the incandenscent bulb has a linear relationship between its measured voltage and current (i.e. Ohm's Law: V=IR).
Table: Measured current and voltage across a light bulb.
Voltage (V): 1 ; 3.5 ; 5.6 ; 7.2 ; 9 ; 10.5
Current (mA): 60 ; 275 ; 450 ; 550 ; 640 ; 820
1. Draw a graph to represent this data. Calculate the slope of this graph, and use this value to determine the resistance of the globe.
2. Describe an alternative method (that doesn't use a graph) to analyse the measured voltage and current data to determine the resistance of the globe. Use this method and compare its result to the value calculated using the graph technique.

A stream is flowing at a speed of 3.0km/h relative to the bank. A boy who can swim at 2.0km/h in still water enters the stream and proceeds to swim downstream. At a certain point he is approaching a boat going upstream. The boat has a speed of 20km/h relative to the stream. To an observer on the shore, the boat and the boy are approaching each other at a speed of?

A 9500 kg boxcar traveling at 18.0 m/s strikes a second boxcar at rest. The two stick together and move off with a speed of 8.5 m/s.What is the mass of the second car?

An air rifle is used to shoot 1.0 g particles at 100 m/s through a hole of diameter 2.0 mm. How far from the rifle must an observer be to see the beam spread by 1.0 cm because of the uncertainty principle? Compare this answer with the diameter of the universe ( ~ 1026 m).

A wave has a frequency of 25 Hz. It has a wavelength of 60 m. What is the period and speed of the wave?