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Q1. A thunderstorm drops 6.0cm of rain on a city that covers an area of 33 km by 45 km. approximation the number of raindrops that fell during the storm. You could assume the diameter of a raindrop is 2 mm.
Q2. A football player runs directly down the field for 35 m before turning to the right at an angle of 25 from his original direction and running an additional 15 m before being tackled. What is the magnitude of the runner's total displacement? Response in units of m.
An object rotates about a fixed axis, and the angular position of a reference line on the object is given by ? = 0.60e8t, what are the magnitudes of the point's
To estimate the size of the moon, a person holds a round pencil of diameter 0.70 cm. When the pencil is 77 cm in front of his eye, What is the angle subtended by the moon
With a particular grating a doublet of the two wavelengths 731.3 and 732.1 nm is viewed in the third order at 9.3° to the normal and is barely resolved. Find the total width of the rulings in nanometers
There is a uniform magnetic field present, given by B=0.003 i + 0.004 j + 0.002 k, where i,j,k are the unit vectors along the cartesian coordinate axes in units of Tesla. Compute the y-component of the magnetic force acting on a segment of wire of..
A satellite is in a circular orbit about the earth (ME = 5.98 1024 kg). The period of the satellite is 4.40 104 s. What is the speed at which the satellite travels
A horse is pulling a buggy. the total force by the horse is 475N applied horizontally. What is the force of friction on the driver and buggy
A parallel-plate capacitor with 2.0 mm plate spacing has circular plates and holds a charge of +/- 3uC on each plate, What is the radius of the plates
A container of groceries has a mass of 15.0 kg. if its coefficent of static friction is 0.20 what force is needed to start the container to move
A 106 m long train begins uniform acceleration from rest. The front of the train has a speed of 23 m/s when it passes a railway worker who is standing 230 m from where the front of train started. What will be the speed of last car as it passes the..
The three displacement vectors in the drawing have magnitudes of A = 5.47 m, B = 5.43 m, and C = 3.91 m. Find the resultant ((a) magnitude and (b) directional angle) of the three vectors by means of the component method. Express the directional an..
The spaceship Lilac, based on the Purple Planet, is 791 m long, as measured at rest. When Lilac passes Earth, Terran observers measure its length to be 733 m.
How much work is done by the horizontal force F_p = 150 N on the 18 kg block of the figure when the force pushes the block 5.5 m up along the 32 degree frictionless incline
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