Physics worksheet?
(a) electromagnetic waves (or electromagnetic energy) (b) Incoming ultraviolet light will transfer energy to the glass. The electrons in the glass vibrate in response to the incident UV light.
More help needed with this physics worksheet!?
A) Block m1: m1a1 = m1g*sin36 - 0.3 m1g*cos36 or a1 = g (sin36 - 0.3 cos36) Similarly for block m2: a2 = g(sin36 - 0.6 cos36) Note that the difference between the two equations for a1 and a2 is only the coefficient of kinetic friction. Solve to get: a1 = 0.345*9.8 m/s^2 = 3.38 m/s^2 a2 = 0.102*9.8 m/s^2 = 1.00 m/s^2 B) If m2, connected by a taut string to m1, is farther down the incline, the acceleration of m1 and m2 are unchanged from the above calculations. This is because m1 is accelerating faster than m2 - m1 is pushing on the string! The string is not restricting the motion of either mass. C) If m1 starts lower with a taut string, then the string remains taut because m1 wants to move faster than m2 because of the greater kinetic frictional force acting on m2. The two masses move as a unit with the same acceleration computed as follows: The tension in the string due to m1 pulling m2 is m1a1 = 3.0 * 3.38 N The force on m2 is m2a2 = 6.0 * 1.00 N The sum of the forces acting on m1 + m2 is: 3.0 * 3.38 + 6.0 * 1.00 N = 16.16 N and the acceleration is obtained from (m1 + m2) a = 16.16 N This works out to be: a = 1.80 m/s^2 Note that the acceleration is intermediate between a1 and a2 as free bodies.
AP Physics Worksheet?
Ok.. I need someone who can solve these for my online school. Only the answer is needed but if someone could help me also solve them for my own benefit that would be amazing. 1) Situation: A crate slides down a ramp that makes a 20∘ angle with the ground. To keep the crate from sliding too fast, Paige pushes back on it with a 61N horizontal force. Question: How much work does Paige do on the crate as it slides 3.6m down the ramp? Express your answer to two significant figures and include the appropriate units. 2) Situation: A 12kg runaway grocery cart runs into a spring, attached to a wall, with spring constant 280N/m and compresses it by 55cm. Question: What was the speed of the cart just before it hit the spring? Neglect any friction. Express your answer to two significant figures and include the appropriate units. 3) Situation: In the winter activity of tubing, riders slide down snow covered slopes while sitting on large inflated rubber tubes. To get to the top of the slope, a rider and his tube, with a total mass of 76kg , are pulled at a constant speed by a tow rope that maintains a constant tension of 370N. Question: How much thermal energy is created in the slope and the tube during the ascent of a 30-m-high, 120-m-long slope? Express your answer to two significant figures and include the appropriate units.
Physics review worksheet help?
While training for the Canadian Air Force, a soldier jumps from an aircraft and falls for 12.0 s with the parachute unopened. The solider then pulls the chord to open the parachute and drops 500 m in 160 s. The magnitude of the parachutist's acceleration after pulling the chord is _______ m/s^2. Teacher gave this question as review for an exam we have and I don't know how to do it. Spend 2 hours last night and still couldn't get it so PLEASE HELPPPPP
PHYSICS WORKSHEET HELP KINETIC ENERGY!!!?
KEbʙт = Kinetic Energy (b)efore of the BulleT KEbʙĸ = Kinetic Energy (b)efore of the BlocK KEaʙт˖ = Kinetic Energy (a)fter of the BulleT plus the small mass. KEaʙĸ- = Kinetic Energy (a)fter of the BlocK minus the small mass. Energy Before = KEbʙт + KEbʙĸ KEbʙт = ½ • Mʙт • Vbʙт² = (½)•(0.0021)•(108.6)² = 12.384 J KEbʙĸ = ½ • Mʙĸ • Vbʙĸ² = (½)•(5.99)•(0.28)² = 0.23481 J Equation 1: Energy Before = KEbʙт + KEbʙĸ = 12.619 J ________________________________________... Energy After = (KEaʙт˖) + (KEaʙĸ-) KEaʙт˖ = ½ • (Mʙт˖) • (Vaʙт˖)² = (½)•(0.0021 + 0.0016)•(20.7)² = 0.7927 J KEaʙĸ- = ½ • (Mʙĸ-) • (Vaʙĸ-)² = (½)•(5.99 − 0.0016)•(Vaʙĸ-)² = (2.9942)•(Vaʙĸ-)² Equation 2: Energy After = (KEaʙт˖) + (KEaʙĸ-) = 0.7927 + (2.9942)•(Vaʙĸ-)² ________________________________________... Momentum Before = Momentum After (Mʙт)•(Vbʙт) + (Mʙĸ)•(Vbʙĸ) = (Mʙт + 0.0016)•(Vaʙт˖) + (Mʙĸ − 0.0016)•(Vaʙĸ-) (0.0021)•(108.6) + (5.99)•(0.28) = (0.0021 + 0.0016)•(20.7) +(5.99 − 0.0016)•(Vaʙĸ-) (0.22806) + (1.6772) = (0.07659) + (5.9884)•(Vaʙĸ-) Vaʙĸ- = 0.3054 m ⁄ sec KEʟosт = { Equation 1 } − { Equation 2 } KEʟosт = { 12.619 } − { 0.7927 + (2.9942)•(Vaʙĸ-)² } KEʟosт = { 12.619 } − { 0.7927 + (2.9942)•(0.3054)² } KEʟosт = 11.55 J
Physics Worksheet Problems.......help me!!?
Ok, vf = final velocity Car 1: Mass: m Velocity: 5v Car 2: Mass: m Velocity: v mv + mv = mv + mv 5mv + mv = mvf + mvf 5v + v = 2vf vf = 3 vo Three times the initial velocity Question 2: since both have Mass "m" and Speed "vo", the equation is: mvo + mvo = .... The left hand side represents the total momentum The answer: 2mvo
Canobie Physics Worksheet answers!?
I am the advisor of the physics club at my sons school until the normal physics teacher comes back from maternity leave. I was wondering if there was anywhere to get the teacher's solution manual for the canobie lake park physics day worksheet. I have looked everywhere online, and it is no where to be found. or if someone has done it in the past and could give me the answers or would mind doing it for me.. It would be greatly appreciated! The kids want me to grade them, but I can't without the answers. I have attached the blank worksheet. please help me!! http://www.canobie.com/docs/workbook-docs/physwork11.pdf
Canobie Lake Park Physics worksheet help!?
I am the advisor of the physics club at my sons school until the normal physics teacher comes back from maternity leave. I was wondering if there was anywhere to get the teacher's solution manual for the canobie lake park physics day worksheet. I have looked everywhere online, and it is no where to be found. or if someone has done it in the past and could give me the answers or would mind doing it for me.. It would be greatly appreciated! The kids want me to grade them, but I can't without the answers. I have attached the blank worksheet. please help me!! http://www.canobie.com/docs/workbook-docs/physwork11.pdf