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SPH4C0 Exam ReviewMotion Review What is the difference between a scalar and vector quantity? Name three vector quantities and three scalar quantities.What is a force? Name five types of forces and indicate what direction that they act in.State Newton’s laws. For each law, describe a situation where it is applicable.What is Inertia?If there is no net force on an object, what can you say about an objects motion?What is the difference between mass and weight?What can you do to reduce friction? Increase friction?A motorcycle took 6.0s to go from rest to 78m/s [fwd]. Calculate the average acceleration.Calculate the average acceleration needed by a train travelling initially at 12 m/s [E] to stop in 120s.Draw a force body diagram for a toboggan on a horizontal surface pulled by a rope and the rope is also horizontal.You exert a force of 46 N [up] on your back pack, causing it to move upward with a constant velocity. Draw an FBD of the back pack determine the force of gravity on the pack.Calculate the acceleration if a net force of 18 N [fwd] on a 7.5 kg bowling ball.Calculate the weight of a 19-kg curling stone.Calculate the coefficient of friction if it takes 59 N of horizontal force to get a 22-kg suitcase to just start to move across a floor. Machines ReviewWhat are the two basic types of machines? Define each type.What is the difference between the three different types of levers?Describe the relationship between the force you have to pull with and the distance that you have to apply that force for a pulley.How does an inclined plane make a task easier?What is torque? How does torque relate to how easy it is to open a door?What do we know about a lever that is in equilibrium?Define mechanical advantage. What determines the ideal mechanical advantage of a pulley?Define efficiency. If FE = 260 N, FL = 350 N, and dE= 1.5 m then dL = ?A mass of 3 kg is .65 m away from the fulcrum of a 1st class pivot. An effort force of 20 N is placed. What is the length of the effort arm?An effort force of 120 N is placed at 3.6 m from the fulcrum of a seesaw to balance a child that is 4.6 m from the fulcrum. What is the mass of the child?If a load is applying a torque on one side of a see saw in a counter clockwise direction, what torque will I have to apply to the other side to keep the see saw in static equilibrium?Calculate the torque generated by a 85kg man sitting on a lever 1.3 m from the fulcrum?Pg 74 # 3A mechanic applies a force of 540-N perpendicular to a wrench to loosen a nut. Calculate the magnitude of the torque if the distance to the nut is a) 0.30 m and b) 0.50 m.A person in a wheelchair (total weight 6.4 x 102 N) is pushed 9.4 m up a ramp with an effort force of magnitude 1.4 x 102 N parallel to the ramp. The wheelchair is raised 1.8m above its initial level. Calculate the IMA, the AMA and the percent efficiency.Energy ReviewDefine the following types of energy: kinetic, gravitational potential, radiant, electrical and thermal.Write an energy transformation equation for a hydroelectric dam.Define work. To get positive work, what has to be true about the force and displacement?What force usually does negative work?Sam lifts an object with a mass of 10kg. The object gains 1000J of gravitational potential energy. How high does she lift it?Calculate the gravitational potential energy of Mr. Simnett (mass is 100kg) when he jumps 1.5m off the ground.Calculate the kinetic energy of Harshil if he is running at 1.5m/s (m = 75kg).If a ball, with a mass of 10kg, is dropped from a height of 5m with what speed will it hit the ground?Define the following terms: thermal energy, heat, temperature, conduction, convection and radiation.Your car’s engine takes in 10,000J of energy per second. The energy output measured in the car’s motion forward is 1600J of kinetic energy per second. What is the efficiency of the car?If a teacher of mass 80kg starts a race and accelerates to a speed of 3.2m/s in 5s. What is their power?Daliah pushes a box with a force of 40N over a distance of 12m in 3 minutes. How powerful is Daliah?The world’s tallest fountain spews out water that reaches a height of 1.7 x 102 m. Each minute, the water pump ejects 2.6 x 104 kg of water to that height. Calculate:The total work done by the pump on the water each minuteThe power of the pump in watts (assume 100% efficiency)Hydraulic and Pneumatic Systems ReviewWhat is the difference between a hydraulic and pneumatic system?What causes atmospheric pressure? What is the pressure that we experience at sea level?A box has a weight of 8.3N and has a base area of 0.093m2. What is the pressure created by the box as it rests on the table?What force will 100.7kPa of air pressure put on 3.3cm2 of your skin?A sail has an area of 12m2. The pressure on one side of the sail is 99.3 kPa and on the other side is 102.8kPa. What is the net force on the sail?There are two pistons connected by a fluid. The small cylinder has a cross sectional area of 37 cm2. The output force is 5500N and the input force is 1800N. Calculate the cross sectional area of the large cylinder.A brake pad measures 4.5cm by 8.5 cm. A force of 3500N is applied to the master cylinder with an area of 2.1 cm2. What is the total force acting on the brake pad?Calculate the absolute pressure, in pascals and kilopascals, at a depth of 3.00 m in a swimming pool if the atmospheric pressure is 1.01 x 105 Pa.State Bernoulli’s principle. Use Bernoulli’s principle to explain how an airplane wing works or to explain why a soccer ball would spin into a net.Name three design changes you could make to a school bus that would reduce pare the gauge pressure and absolute pressure for a car tire that is flat and a car tire that is filled to its maximum (300kPa). Identify the function of four parts of a fluid system.Explain how a water tower works. What is the difference between laminar and turbulent flow?Electricity ReviewWhich way does current flow? Electrons flow?How do you hook up an ammeter? Voltmeter?What is Ohm’s Law?The current through a calculator is 4.0 x 10-3 A. If the resistance of the calculator is 1.5 x 103 ?, what is the potential drop across it?Give an example of an insulator and a conductor.State KCL/KVL.What is the use of finding equivalent resistance?Find the equivalent resistance of three 8 ? resistors connected in series.Find the equivalent resistance of 15 ?, 60 ? and 60 ? resistors connected in parallel.Pg 337 # 1,2, Pg 342 # 9, Pg 343 # 2,8What is the function of a transistor, capacitor, diode and integrated circuit? What are their symbols?How does a pacemaker/defibrillator work?Why should you not take appliances into the bathtub with you? (talk about resistance)Know circuit symbols and how to draw a circuit.How does an analog signal get converted into a digital signal?What is ‘let-go voltage’? How is the human body and electrical machine?What is the difference between alternating current and direct current?Calculate the power of a 120 V electric sander that uses 3.0 A of current.Calculate the energy consumed (in kWh) and the cost of the energy for a 0.32 kW drill that is used for 0.5h. (assume a rate of 9.2 cents/(kWh)).Sound and Light ReviewWhat are the three types of waves? What is the difference between in-phase and out of phase?A wave has a wavelength of 2m and a frequency of 3 Hz. What is it’s speed?A wave is moving at 10m/s. If it has a wavelength of 30 m. What is the frequency?What is a node?What is mechanical resonance? Explain how a singer can use his/her knowledge of mechanical resonance to break a wine glass with their voice.How is sound carried through the air?How does sonar work? How do fibre optic cables work?Calculate the speed of a wave that has a frequency of 18Hz and a wavelength (λ) of 2.7m.Waves on a spring on the floor lose energy as they travel. In your experience, do sound waves display the same property?Calculate the wavelength () of an X ray with a frequency of 2.00 x 1018 Hz. ................
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