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A car starts from rest and travels for 5.0 s with a uniform acceleration of +1.6 m/s2. The driver then applies the brakes, causing a uniform acceleration of -1.0 m/s2. If the brakes are applied for 2.0 s, determine each of the following:
(a) How fast is the car going at the end of the braking period?
_____m/s
(b) How far has the car gone?
_____m
A compact disc rotates from rest up to an angular speed of 31.4 rad/s in a time of 0.892 s. What is the magnitude of the tangential acceleration
The 60kg cradle A is carrying the 12 kg pipe B at the speed of 8 m/s when it hits the rigid wall. suppose all the impacts are plastic, determine the speed of the pipe immediately after the impacts. Neglect friction.
Two positive point charges, each 17?C , lie along the x-axis at x = -0.12m and x = +0.12m . Find the electric field at the point (0, 0.21m)
A staging that weighs 440 N supports two painters, one 110 N and the other 460 N. The reading in the left scale is Ft = 800 N. What is the reading Fr, in the right hand scale.
A 0.100 kg block is suspended from a spring. When a small pebble of mass 40 g is placed on the block, What is the net force on the pebble when it is at a point of maximum upward displacement
create a position vs. time speed vs. time and acceleration vs. time graph for both cars. write a paragraph comparing
The Greenland Ice Sheet covers an area of about 1 .7 . 1 06 km2 with a mean thickness of about 1 .4 km. What is the renewal time (years) of the Greenland Ice Sheet
A dragster accelerates to a speed of 100 m/s over a distance of 398 m. Determine the acceleration (assume uniform) of the dragster
Draw a circuit for two resistors R1 and R2 in series, in parallel with a third resistor R3 in series with a capacitor C1. What will be the time constant of voltage decay
Two concentric metallic spheres of radii r1 and r2> r1, respectively, are maintained at temperatures T1 and T2, and are separated by a layer of homogeneous material thermal conductivity k.
A uniform meter stick with a mass of 205 g is supported horizontally by two vertical strings, one at the 0 cm mark and the other at the 90 cm mark. what is tension on the string at the 0 cm mark and at the 90 cm mark.
Three long parallel wires are 3.8cm from one another. Determine the magnitude and direction of the magnetic field at the midpoint of the side of the triangle between wire M and wire N
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