Dynamics
It takes someone 5.0 seconds to travel 10.0m
At what velocity were they travelling?
v = 2.0m/s
A 5.0kg ball is travelling at 3.0m/s, what is its momentum?
p = 15kg*m/s
Which way do magnetic field lines flow on the outside of the magnet?
North to south
True or False:
Visible light travels faster than Radio Waves (in a vacuum)
False. All light travels at the same speed in a vacuum.
What is a neutron star?
The core of a dead star made from neutrons.
True or False:
Speed and velocity are the same thing
False. speed is a scalar value while velocity is a vector value. this means that velocity needs a direction while speed doesn't
True or False:
Momentum is always conserved.
True. Momentum is always conserved in any system
What does your palm represent in the right-hand rule?
The direction of the force acting upon a charged particle in the field.
What is the frequency of red light with a wavelength of 680nm?
f = 4.4x1014Hz
What is strange matter?
Matter made up of strange quarks.
A car travelling at 30km/h slows down to a speed of 10km/h over a period of 10 seconds. what is the cars acceleration during this period in m/s2?
a = -0.6 m/s2
An object with a mass of 100kg is flying through space at a constant 125m/s for 100 years. What is the total work done on the object?
No force is being applied therefore work is 0.
Two point charges with charges -0.9x108C and 1.5x108C have a separation of 1.2m. What is the electrostatic force between the charges? Are the charges attracted or repelled by each other?
FE = -8.4x1024N
Attracted
The first nodal line in a single-slit diffraction pattern occurs at an angle of 25o. if the wavelength of the light passing through the slit is 680nm, what is the width of the slit?
w = 1.6x10-6 m
True or False:
Physical matter is metastable.
True.
A ball is thrown into the air at a velocity of 100.0m/s. if the launch angle is 14.0o what is the maximum height of the ball assuming the launch and land sites are at the same level.
Hmax = 29.8 m
A 1550kg car moving at 35.0m/s [N] collides with a 1350kg car moving at 32.0m/s [S], when they collide they stick together. What is the resultant velocity of the system.
v = 3.81 m/s [N]
Jupiter has a gravitational field strength of 25N/kg and a radius of 7.0x104km, what is its mass?
mj = 1.8x1027kg
Two point sources generate waves with a frequency of 10.0 Hz. A point on the third nodal line is 15cm away from one source and 13cm away from the other. what is the wavelength?
λ = 8.0x10-3 m
What kind of black hole has no charge and no spin?
A schwarzschild blackhole.
Two blocks are connected by a massless string. The second block (m2) is free hanging by a frictionless pully. m1 = 14.0kg. m2 = 3.0kg. the coefficient of friction is 0.21. what is the acceleration of the masses?
a = 0.035m/s2 [down]
A spaceship when loaded with a 50.00kg projectile has a mass of 1000.0kg. If the ship is flying at 700.0m/s through space when it fires the projectile at a velocity of 400.0m/s relative to the ship. What is the new velocity of the ship?
Vship = 679m/s
A particle with a charge of 3.40μC moves through a magnetic field with a strength of 0.700T at 4.50x105m/s. if the field lines are perpendicular to the direction of the particles path, what is the magnitude of the force acting on the particle.
FM = 1.07N
Two slits with a separation of 0.25mm are 1.4m away from a wall. the distance between the 1st and 11th bright fringes is 10.0mm. what is the wavelength of the light travelling through the slits?
λ = 1.8x10-8m
Where is strange matter most likely to be found?
Inside of a neutron star.