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On a pleasure cruise a boat is traveling relative to the water at a speed of 4.94 m/s due south. find the magnitude of the passenger's velocity relative to the water
In a football game a kicker attempts a field goal. The ball remains in contact with the kicker's foot for 0.0682 s, determine the vertical components of the launch velocity.
A golfer hits a shot to a green that is elevated 3.20 m above the point where the ball is struck. find the speed of the ball just before it lands
A factory worker accidentally releases a 200 kg crate that was being held at rest at the top of a ramp that is 3.9 m long, How fast is the crate moving as it reaches the bottom of the ramp
A laser is mounted on a table 1.00m above the ground, pointed at a vertical mirror a horizontal distance 3.48maway. At what height does the reflected beam strike the wall
Two long, parallel wires are separated by a distance of 2.50cm . The force per unit length that each wire exerts on the other is 3.20×10?5N/m, determine the current in the second wire
A purple beam is hinged to a wall to hold up a blue sign. The beam has a mass of mb = 6 kg and the sign has a mass of ms = 16.3 kg. What is the tension in the wire
If the operators of a spy satellite pondered using it to photograph license plate numbers. hat is the smallest distance between two points that it can resolve
The Earth and Moon are separated by about 400 ? 106 m. Suppose Mars is 1.6 1011 m from Earth and forms a right triangle with Earth and the Moon. determine the angular separation of Earth
A microscope has a 16.8 cm tube length, a 0.64 cm focal length of the objective lens, calculate the microscope's magnification
If an astronomical telescope has the magnification of -32.0 ? and its objective lens has a focal length of 77 cm, what is the focal length of its eyepiece
Kim has a far point of 29 cm. If she wants to use glasses of power -3.99 D to correct her vision. How far from her eyes should the glasses be put
If Cassie's near point is 110 cm, what's the power of the glasses if it helps her gain back the normal near point
A telephoto lens can focus on objects located between infinity and closer. To focus, How far away is the closest object that it can capture
Suppose a monochromic light strikes a grating at normal incidence. The first order diffractions lines appear at the angle 23°, what is the frequency of the light that passes through
A steel wire of length 1.97m with circular cross section must stretch no more than 0.270cm, What minimum diameter dmin is required for the wire
A diverging lens has a focal length of 15.0cm . For each of two objects located to the left of the lens, determine Wether the image is erect or inverted
A small steel sphere of mass 0.40 kg is attached by a 0.50 m long cord to a swivel pin set into the surface of a friction-less table top. compute the tension in the cord
Four (and only four) full spectral orders can be seen on either side of the central maximum, find the maximum number of slits per cm for the grating
During a testing process, a worker in a factory mounts a bicycle wheel on a stationary stand and applies a tangential resistive force of 120 N to the tire's rim. what force must be applied to the ch
An elephant's legs have a reasonably uniform cross section from top to bottom, and they are quite long, An elephant has legs that stretch 2.3 m from its shoulders to the ground. How much time is requ
A 57.0kg cheerleader uses an oil-filled hydraulic lift to hold four 130kg football players at a height of 1.40m, what is the diameter of the football players' piston
A horizontal force of magnitude 46.1 N pushes a block of mass 3.64 kg across a floor where the coefficient of kinetic friction is 0.554. find the increase in the kinetic energy of the block
When using 690 nm light to perform the double slit experiment, the interference in the middle is a bright fringe, If the slits are 2.48 µm apart, at what angle will we observe the first-order da
A hollow sphere of radius 0.15 m, with rotational inertia I = 0.078 kg m2 about a line through its center of mass, What is the speed of the center of mass of the sphere at the initial position