A pendulum has a mass of 0.5 kg and starts at a height of 0.3m. If it is released from rest, how fast is it going when it reaches the lowest point of its path?
This assignment is due by tomorrow night. I have attached a word document with all the specifications. Please read it over to make sure you have all the materials. Explain the difference between linear speed and rotational speed. Include formula difference and how rotational speed is changed to linear speed. A bicycle has wheels with a 30-centimeter radius. If smaller wheels with a 25-centimeter radius are installed, what is the change in linear speed of the bicycle if the wheels rotate at 1 revolution per second? In terms of rotational inertia, explain why: It's hard to walk without bending your knees. Short-legged people step more quickly than long-legged people do. You can swing a baseball bat faster than a long one of the same weight. Answer the following questions: Explain how skaters can quickly go from a slow to fast spin and vice versa. What happens to their angular velocity and moment of inertia? Is an external torque required? Explain. What is a gyroscope and how is it used as a navigational aid? To tighten a bolt, you push with a force of 80 Newtons at the end of a wrench handle that is 0.25 meters from the axis of the bolt. What torque are you exerting? If you move your hand inward to be only 0.10 meters from the bolt, what force do you have to exert to achieve the same torque? Do your answers depend on the direction of your push relative to the direction of the wrench handle?
state how many significant figures are in 2500mg of magnesium state how many significant figures are in 15.50mg of potassium state how many significant are in 0.0052 grams of sodium chloride
Lab 24 Reflection and Refraction Part 1 - Reflection DATA TABLE: Incident angle, ?i 30 45 60 Reflected angle, ?r What can you conclude about the relationship of ?i and ?r? Does this verify the law of reflection? Part 2 - Reflection: Step I - Find the image location, circle that point and label it “I”. Measure and record the object distance do and the image distance di. What can you say about the location of the image? Step J - Is the image real or virtual? Part 3 - Refraction and the Refractive Index of Water: Data Table Experiment Incident angle, ?i Refracted angle, ?r Index of refraction, n 1 2 3 Average value of the index of refraction, navg = _______________________. Find the percent difference between the known value and your average experimental value. Part 4 - Refraction and Refractive Index: Data Table Experiment Incident angle, ?i Refracted angle, ?r Index of refraction, n 1 2 3 Average value of the index of refraction, navg = _______________________. Find the percent difference between the known value of 1.49 and your average experimental value.
APA format/2 pages In a two-page paper, identify the physics principles contained within the following scenario. Explain how these principals connect to electricity, magnetism, or light in modern applications in physics. Finally, consider the different concepts in which James Clerk Maxwell did research, and give an example of one of these concepts in use in your life. For instance, Maxwell's research led to the development of radio waves. If you listen to a radio, then you are using Maxwell's research. Provide another example from your own experience, compare, and contrast your scenario to the provided scenario below. Scenario Mandy took a trip to Rome, Italy. Once landed and inside the terminal, she turned her cell phone back on, but it was not charged. She found a charging station with a USB adaptor port. The USB was universal, providing 5 volts in any country you were in, and a small red LED next to her phone's screen told her the phone was successfully charging. This USB port seemed to have very high amperage, meaning it charged her phone quickly. She was aware, though, that almost all of Italy's electricity was generated by burning fossil fuels, and thus she was determined after this to use the portable solar charger she had bought rather than wall electricity.
Two Paths lead to the top of a big hill. One is steep and direct, while the other is twice as long but less steep. How much more potential energy would you gain taking the longer path? A. The same B. Twice as much C. half as much D. You gain no PE in either case. A stone is thrown straight up. Compare its kinetic energy KE, to its potential energy GPE as it is going up. A. KE increases and GPE decreases B. KE decreases and GPE decreases . C. KE increases and GPE increases D. KE decreases and GPE increases A mass attached to a vertical spring causes the spring to stretch and the mass to move downwards. What can you say about the springs potential energy (EPE) and the gravitational potential energy (GPE) of the mass A. both EPE and GPE decrease B. EPE increases and GPE decreases C. both EPE and GPE increase D. EPE decreases and GPE increases A marble is placed in a marble launcher. What can you say about the springs potential energy (EPE) and the kinetic energy (GPE) of the marble as the marble is being fired from the launcher. A. both EPE and KE decrease B. EPE increases and KE decreases C. both EPE and KE increase D. EPE decreases and KE increases
Billiard ball A of mass mA = 0.120kg moving with speed vA = 2.80 m/s strikes ball B, initially at rest, of mass mB = 0.142kg . As a result of the collision, ball A is deflected off at an angle of A = 30.0 degrees with a speed vA = 2.10 m/s, and ball B moves with a speed vB at an angle of (theta)B to original direction of motion of ball A. Solve these equations for the angle, ??B, of ball B after the collision. Do not assume the collision is elastic. Solve these equations for the speed, v?B, of ball B after the collision. Do not assume the collision is elastic.
