Energy & Momentum
E&M
Space
Limits and introductory Calculus
Recent scientific news
100
Fill in the blanks: momentum is always conserved unless an _____ is applied
External force
100
In a circuit with a battery of 8V and a resistor of 6 Ohms, the current:?
4/3 Amperes
100
a region of space having a gravitation field so intense that no matter or radiation can escape
Black hole
100
the f’(x) of x3+2x +1
3x2. +2
100
the company that recently succeeded in their experiment of reusing rockets
SpaceX
200
express Kinetic energy in terms of momentum and mass Use p: momentum, and m: mass
p^2/2m
200
change in magnetic flux induces ___
EMF/Voltage
200
Phenomenon when a receding galaxy’s wavelength of radiation is observed to be longer than its actual wavelength
Doppler's effect/ Redshift
200
the derivative of ln (x^2 +5x +4)
(2x+5)/ (x2+5x+4)
200
the hypothetical form of matter that does not interact with light or other electromagnetic radiation The study of this won a Nobel prize in 2019
Dark Matter
300
Mendel is flying at a speed v to the right. However, he busted midair and splitted into two parts. One part is now flying to the left with speed v/2. Find speed of centre of mass
V
300
200>300>100
300
True or False: The square of the period of a body orbiting around a star is proportional to the cube of the orbit’s semi-minor axis
False
300
f’(x) of x4 + 3x3+ 2t + 5? (t is an integer)
4x3 +9x2
300
the type of eclipse that was seen this year in North America
Total Solar Eclipse
400
A planet orbits a star in a circle. If the potential energy of the orbit is U, U is measured with respect to infinity. Find the total mechanical energy of the orbit in terms of U
U/2
400
There was a power shortage in Vancouver last night. The power that was supposed to be delivered to John’s house was 300W. John had a power outage for 30 minutes, and the resistance of John’s house when receiving the power is 75 ohms. Find the current that John’s house receives, and the Energy his house lost from the power outage.
2A, 540,000 J
400
If the stellar magnitude of star A is higher than that of Star B, which of the stars is brighter? Star A, Star B, or the same?
Star B
400
The value the function f(x) = x * sin(1/x) approaches to as x approaches infinity
1
400
the sweet fruit that was recently created, as published by nature on November 13, using CRISPR
tomato
500
A
500
C
500
Kaden’s favourite big black polar bear stargazes exactly at the north pole. It sees a star at an angle of 60 degrees above the horizon at noon. After how many hours will that star set?
Never
500
2pi
500
In 2023, lutetium hydride (LuH2) became this material that works around room-temperature Tc under low pressure. Find this material that exhibits the Meissner effect below Tc, the temperature at which the material starts to have zero resistance and is efficient at conducting electricity, expulsing external magnet fields.
superconductors