1. The force on a wire carrying 8.75 A is a maximum of 1.28 N when placed between the pole faces of a magnet. If the pole faces are 75.4 cm in diameter, what is the approximate strength of the magnetic field?
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- 1. Use the given graph of f(x) to sketch the graph of its derivative, f'(x), on the same axes. -0.5 0.5 0 -0.5 0,5Two PHY11X classmates are standing on top of the Carlton Centre. One classmate is standing at the edge of a building and throws one ball straight up while the other classmate throws the other ball straight down at the same initial speed. Neglecting air resistance, the ball to hit the ground below the building with the greater speed will be A. the one thrown downward. B. impossible to determine with given information. C. neither -- they will both hit with the same speed. D. the one thrown upward.I. -13R1 + I4R2 – 1,R6 + E = 0 -1! II. 4R2 + I,R4 = I5R3 R3 III. IR + I5R3 + 1,R5 = 0 IV. -1½R5 – I6R4 – I, R6 = 0 3. V. -l3R, – I¼R2 – E = !,R6 Consider the circuit shown in the figure and the provided current directions. Which equation is correct? Şekilde gösterilen devreyi ve verilmiş olan akım yönlerini göz önüne alırsak hangi denklem doğrudur? II O Iv R2 R4 R5
- 9. a. An arrow is fired from a bow with a velocity of 69.2 m/s. The arrow has a mass of 0.082 kg. The arrow travels 0.855 m as it's being released/ while the force of the taunt string acts on it. What is the change in KE, AKE, of the arrow? 196.33 Previous submissions: b. What was the force of the bow string? 229.63 Previous submissions: J N V incorrect V incorrectHalliday, Fundamentals of Physics, 11e Help I System Announcements PRINTER VERSION 1 BACK NEXT Chapter 02, Problem 043 GO When a high-speed passenger train traveling at vp = 152 km/h rounds a bend, the engineer is shocked to see that a locomotive has improperly entered onto the track from a siding and is a distance D = 670 m ahead (see the figure). The locomotive is moving at v = 32 km/h. The engineer of the passenger train immediately applies the brakes. Assume that an x axis extends in the direction of motion. What must be the constant acceleration along that axis if a collision is to be just avoided? High-speed train Locomotive Number Units che tolerance is +/-2% Click if you would like to Show Work for this question: Open Show Work section 8.2.pdf Show all 1:41 PM ENG 3/21/2021 pouse rohome f1n end prt sc insertA cannon fires a 10.0 kg cannonball horizontally from the top of a 50 m high cliff with an initial speed of 80.0 m/s. The origin (0,0) is at the base of the cliff as shown in the figure, not at the starting position of the cannonball. Assume no air resistance, ball rotation, etc. Only gravity is acting on the ball while it is in flight. a. Fill in the following table. If there is/are unknown quantity/ies put a question mark in those boxes. Don't forget units! Yi xf yf Vxi Vyi Vxf Vyf Ax ay (0,0) b. Using the information in the table, determine how long the cannonball is in the air.
- 95 N. 55 N O 55 N. 95 N A baseball is thrown by the centerfielder (from shoulder level) to home plate where it is caught (on the fly at shoulder level) by the catcher. At what point is the magnitude of the ball's velocity at a minimum? (air resistance is negligible) * just after leaving the centerfielder's hand just before arriving at the catcher's mitt at the top of the trajectory velocity is constant during entire trajectory A ball is rolled off a table with an initial speed of 0.24 m/s. A stopwatch measures the ball's trajectory time from table to the floor to be 0.3 s. What is the height of the table? (g = -9.81 m/s2 and air resistance is negligible) IAPlease help with the solution. Give an example of when you’d use a combined plane change vs a simple plane change. (2 examples, one for each type of plane change)Q3
- m L 4. A box with a mass m = 0.4 kg is released from rest at the top of a curved section of a track that is one quarter of a circle with a radius R = 0.2m. When the box reaches the bottom of the curved track it slides on a horizontal section of the track. There is no friction on the curved section of the track. a. Find the velocity of the box at the bottom of the curved section of the track. b. Find the normal force on the block when it is at the bottom of the circular section of the ramp. If there is a Resistive force F on the horizontal section of the track and is given as a function of speed by F=-4v² c. Write down the differential equation for the speed of the block. 1 d. Show that the solution can be written as: v = 0.5 + 10tA 12.5 kg box sits on a shelf that is 1.8 m high. If it is dropped, how fast will it be going just before it hits the ground? m/sYour friend's 11.1 g tassel hangs on a string from his rear-view mirror. When he accelerates from a stoplight, the tassel deflects backwards toward the rear of the car. If the tassel hangs at an angle of 6.89° relative to the vertical, what is the acceleration of the car?