A type of toy catapult consists of a movable plunger which has a spring attached as shown above. The handle was pulled down to fully compress the spring and on release the metal ball of mass 0.1 kg (weight 1 N) was projected 0.75 m vertically. ai What type of energy is stored in a compressed spring? [1 ii What happens to this stored energy when the handle of the plunger is released? A i. what happens to this stored energy when the handle of plunger is released?
Ametal cube of side 6cm at 20 degree Celsius on heating to 600 degree Celsius increases by 0.3cm calculating the coefficient of linear expansion coefficient of superficial expression coefficient of cubical expansion
The mass of a planet is 10¹⁸ kg and its radius is 10³ m. Calculate the acceleration due to gravity on its surface. Use the known value of G. [6.673×10^-11 N m² kg^-2]
.A force of 50 dynes is acted on a body of mass 5 g which is at rest for an interval of 3 seconds, then impulse is a. 0.00015 N.s Ic0.0015 N.s C. 0.15 N.s d. 1.5 N.
Dr. Amari is investigating whether automobile accidents in her city increase, decrease, or stay the same 24 hours after daylight savings (this is when the time changes to one hour earlier). She looks up public records at the police station and documents any accidents and notes the dates and times. Dr. Amari discovers a trend. She finds that accidents do seem to increase right after clocks are reset to an hour earlier. Which one of the following research techniques is Dr. Amari using? A. naturalistic observational research B. archival research C. experimental research D. survey research
An object of mass 250 g is at rest over a spring in vertical position on a table and compresses it by a length x. If one pushes the object towards the spring applying a force of magnitude F=6,0 N, the spring is compressed by another 1,5 cm. In both the proposed scenarios the sum of the forces acting on the object is null. Determine the elastic constant of the spring
The distance – time graph represents the motion of the ball-bearing as it falls through the oil. Calculate the constant speed reached by the ball-bearing. Show clearly how you use the graph to work out your answer.
A golf ball is thrown straight up in the air at a velocity of 8.3 . Determine the maximum height of the golf ball. (b) How long will it take the ball to reach its maximum height? (c) How long will it take the ball to fall from its maximum height to the height from which it was initially launched?
A car travels 150 kilometers in 3.2 hours. What is the average velocity for the trip in meters per second.
Consider the diagram below, showing the locations of 6 people in front of a mirror. Draw ray lines to show: a. Whose image is person A able to see? b. Whose image can’t person B see?
The two prisms shown in the diagram below are made of glass. A ray of red light enters each prism from the air, as shown. The critical angle for red light at the glass-air boundary is 42°. On the diagram, complete the paths of the rays passing through each prism and out into the air again.
Also Giving BRAINLIEST!!2. In Fig. 2-7 a mass m of 12.00 kg is pulled, at constant speed, along an inclined plane which makes an angle with the horizontal. (a) What is the value of angle A if we want to raise the mass m to a height of h = 2.00 m? (b) What is the mechanical advantage produced by the inclined plane? We assume that the inclined plane is frictionless.
What are the causes of different falls in the air?A, Highlight drop dropB, The Wind BlowsC, of objectD, Air resistance
Two wires are 16 m and 24 m long. The wires are to be cut into pieces of equal length. a) Find the maximum length (in m) of each piece. b) What is the total number of such pieces formed from the two wires?
