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Determine the normal reaction of the plane on the object and calculate the time taken for the object to reach the bottom of the plank and also its velocity at that time.
A glider with mass = 0.230 sits on a frictionless horizontal air track, connected to a spring with force constant = 5.10 . You pull on the glider, stretching the spring 0.130 , and then release it
Azelastine hydrochloride is an antihistamine nasal spray. A standard size container holds one fluid ounce (oz.) of the liquid. You are searching for this medication in a European drugstore and are a
Find the magnitude and sign of a charge q0 that when placed at the origin results in a net force of zero on each of the three charges.
What fraction of the power radiated by the sun is intercepted by the planet Mercury? The radius of Mercury is 2.44 x 106 m, and its distance from the sun at the moment is 5.75 x 1010 m. Assume that
A skier moving at 5.00m/s encounters a long, rough horizontal patch of snow having coefficient of kinetic friction 0.220 with her skis. How far does she travel on this patch before stopping?
A woman is reported to have fallen 178 ft from a building, landing on a metal ventilator box. Calculate the magnitude of her average acceleration while in contact with the box.
Two identical cannons fire cannonballs horizontally with the same initial velocity. One cannon is located on a platform partway up a tower, and the other is on top, four times higher than the first
Find (a) the magnitude and (b) the angle (from due east) of her final displacement from the starting point. (c) Find the distance she walks.
Find the magnitude of the maximum horizontal force F that can be applied to the lower block so that the blocks will move together.
Light with a frequency of 5.60×1014Hertz travels in a block of glass that has an index of refraction of 1.52. What is the wavelength of the light in vacuum? Use 3.00×108 for the speed of l
A planet of mass 4.00 1025 kg is in a circular orbit of radius 3.00 1011 m around a star. The star exerts a force on the planet of constant magnitude 2.08 1023 N. The speed of the planet is 3.95 10
If you wanted to store 10.0 j of potential energy in this spring, what would be its total length? Assume that it continues to obey Hooke's law.
(Give the direction as a positive angle with respect to due east). Find the (c) magnitude and (d) direction of B - A. (Give the direction as a positive angle with respect to due west).
Find the surface charge (in µC) on the inner surface of the shell. Should the charge Qsphere has an effect here? Was it zero in the example?
The coefficients of friction between the box and roof are shown(µs=0.700, µk=0.400). The system is not moving. Find the friction force on the bag of gravel. Find the Friction force on th
If a charge Qw5 is place on top of the uniform surface charge with a weight (Wt) directed towards the -az, find the distance d5 at which the charge will levitate.
A 17 g piece of Styrofoam carries a net charge of -6.3 µC and floats above the center of a large horizontal sheet of plastic that has a uniform charge density on its surface. What is the charg
A coiled telephone cord forms a spiral with 56 turns, a diameter of 1.30 cm, and an unstretched length of 60.0 cm. Determine the self-inductance of one conductor in the unstretched cord.
What must be the coefficient of static friction to 2 decimal places between you and the surface for you to be saved from the fire?
How would the law of conservation of momentum help forensic scientists determine where the fragments from an explosive would land
If the lumberjack now trots toward the other end of the log with a speed of 2.7 m/s relative to the log, what is the lumberjack's speed relative to the shore? Ignore friction between the log and the
On the planet Newtonia, a simple pendulum having a bob with a mass of1.25 kg and a length of 185.0 cm takes 142 sec, when released from rest, to swing through an angle of 12.5 degrees, where it aga
If the coefficient of kinetic friction between tires and dry pavement is 0.73, what is the shortest distance in which you can stop an automobile by locking the brakes when traveling at 34.9m/s ?
A drunken sailor stumbles 425 meters north, 375 meters northeast, then 325 meters northwest. What is the total displacement and the angle of the displacement? (Assume east is the +x-direction and no