Reference no: EM133198182 , Length: Word count: 2 Pages
Question 1: A 720N man climbed a staircase that was 12 meters high in 6.5 seconds.
Find:
a) his mass in kg
b) The work he performed during the climb
c) The Potential Energy he gained.
d) The power, in watts, generated.
Question 2: Convert 25 m/s to mph (1609m = 1 mile)
Question 3:
a) Write 0.845 in standard scientific notation.
b) Write 124 x 104 as a whole number.
Question 4: If you speed up on you bike from 2.4m/s to 21m/s in just 9.3 seconds calculate your acceleration.
Question 5: If you were to scuba dive to depth of 55 meters what pressure , in Pascal, would you experience?
(recall 1 atm = 101.3kPa and 10m of water = 1 atm)
Question 6: What is the Impulse when a force of 60N is applied in 4.5 seconds?
Question 7: A lunar rock sample has a density of 3.7 g/cm3. If the volume of the sample is 3 cm3, what is the mass of the sample?
Question 8: What momentum does a 19 kg bike have moving at 21.5 m/s?
Question 9: A Big Mac has 1520kcal of energy. How many Joules is this?
Question 10: A 38-volt battery is connected to three parallel light bulbs.
- Diagram and label a schematic diagram for the circuit.
- Calculate the current (I) if the total resistance of the circuit is 15 ohms.
- Calculate the power in Watts if the supplied voltage drops to 33 volts.
Question 11: Diagram and label a Solar and Lunar eclipse.
Question 12: Find the number of nuclear particles in the following elements:
Protons : Br _____ Fm _____
Neutrons : Br _____ Fm _____
Electrons : Br _____ Fm _____
Question 13: For a wave traveling at a velocity of 255 m/s with a frequency of 122Hz what must the wavelength be?
Question 14: A wave with a frequency of 496Hz has a period of how many seconds? (decimal answer)
Question 15: How many grams are required to make a 5.5 molar solution of:
CaCl2_____g CH4 _______g
Question 16: Write a balanced nuclear equation for the following Alpha decays:
Thorium - 236 Po - 210
Question 17: The star Polaris has a magnitude of 2. If the star Prosion has a magnitude of 5. Which one is brighter? The magnitude difference between the two is how many times brighter or dimmer?