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A person pushes on a stationary 125 N box with 69N at 30degrees below the horizontal, as shown in the figure. The coefficient of static friction between the box and the horizontal floor is 1.20
A. What is the normal force on the box?
B. What is the friction force on the box?
C. The person now replaces his push with a 69N pull at 30degrees above the horizontal. Find the normal force on the box in this case.
A 10 kilogram block of metal measuring 12cm by 10 cm by 10 cm is suspended from a scale and immersed in water. What is the reading of the spring scale
Suppose that the amplitude and frequency of the transverse wave, Find the total vertical distance (in cm) through which the colored dot moves in 3.8 s
Use Ampere’s law to determine the magnetic field in a densely wound toroidal solenoid with inner radius a, outer radius b, and N total turns. The cross section of the solenoid is a rectangle of width b-a and height h.
A dolphin wants to swim directly back to its home bay, which is 0.760 km due west. It can swim at a speed of 4.23 m/s relative to the water, What direction should the dolphin head
a person slides from rest down a smooth hemispherical hill. At what angle does this person leave the surface
Two blocks, masses m1 and m2 are connected by an ideal string passing over an ideal pulley. Find the acceleration of each block
A certain organ pipe, open at both ends, produces a fundamental frequency of 252Hz in air. what fundamental frequency f He will it produce
find the coefficient of linear expansion for the material of which the rod is made.
Ship A is located 3.2 km north and 2.1 km east of ship B. Ship A has a velocity of 22 km/h toward the south and ship B has a velocity of 40 km/h in a direction 37° north of east. At what time is the separation between the ships least
A 7.1cm diameter horizontal pipe gradually narrows to 5.7cm . When water flows through this pipe at a certain rate, the gauge pressure in these two sections is 33.0kPa and 24.0kPa, What is the volume rate of flow
A 2000-kg car travelling at an initial speed of 50 km/h skids to a stop with a constant acceleration. Determine the length of the skid marks
After a golf ball is hit it takes off with an initial speed of 20.9 m/s and at an angle of 32.5° with respect to the horizontal. How far would the ball fly if the initial speed was doubled
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