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The two hot air balloons in the drawing are 48.2 and 57.0 m above the ground. A person in the left balloon observes that the right balloon is 15.0° above the horizontal. What is the horizontal d
Take the center of the clock as the origin, and use a Cartesian coordinate system with the positive x axis pointing to 3 o'clock and the positive y axis pointing to 12 o'clock. What is the magnitude
A 0.25 kg ball moving north at 7.7 m s strikes a wall obliquely and rebounds heading east with the same speed of 7.7 m s . What was the magnitude and direction of the impulse on the ball?
The average person passes out at an acceleration of 7g (that is, seven times the gravitational acceleration on Earth). Suppose a car is designed to accelerate at this rate. How much time (in seconds
What is the total charge on the three spheres before they are allowed to touch each other?
The magnitude of the resultant force acting on the elephant in part b of the drawing is k times larger than that in part a. Find the ratio F.
(a) if the loop has a length L= 45 cm and a width w=20 cm, what are the magnitude and direction of the force exerted by the wire on the loop? (b) what is the force exerted but the current loop on th
Determine the velocity of a canoe relative to the shore of a river if the velocity of the canoe relative to the water is 3.2 m/s North and the velocity of the water to the shore is 2.3 m/s East.
What is the slope, and what are the units of the slope? Sketch a graphical representation of the temperature dependence of the speed of sound.
A car travels around a curve at a constant speed of 83.0 km/h. What is the car's instantaneous velocity at an instant when it is headed west? magnitude?
The second ball just misses the balcony on the way down. How far apart are the balls 0.406 s after they are thrown? The acceleration of gravity is 9.8 m/s2.
A 80 keV X-ray undergoes a compton scattering with an electron of tungsten and ejects this electron with energy 15eV. What is the energy of the scattered X-ray?
Two point charges are on the y-axis. A 2.0 µC charge is located at y = 1.40 cm, and a -2.22 µC charge is located at y = -1.70 cm. (a) Find the total electric potential at the origin.
Use the sine function to determine how long of a board you need to use to make a ramp that just reaches the 1.00-\rm m high truck bed at a 40^\circ angle to the ground.
At what angle should the second snowball be thrown to arrive at the same point as the first?
Roger sees water balloons fall past his window. He notices that each balloon strikes the sidewalk 1.5 s after passing his window. Roger's room is on the fifth floor, 25 m above the sidewalk. How fa
The two hot air balloons in the drawing are 48.2 and 61.0 m above the ground. A person in the left balloon observes that the right balloon is 14.6° above the horizontal. What is the horizontal d
An electric field does 9.36 MeV of work in moving a very small charged particle through a potential difference of -3.12MV. Find the charge of the particle as a multiple of e.
Find the maximum height reached by the rocket. Ignore air resistance and assume a constant acceleration due to gravity equal to 9.80 .
A train has a mass of 4.65E+6 kg and is moving at 51.4 km/hr. The engineer applies the brakes, which results in a net backward force of 1.54E+6 N on the train. The brakes are held on for 28.9 s. Wha
What is the distance of closest approach if the thrust points in the radial direction?
Consider the point (x, (x^2/4L)), where x is very large. Find approximate expressions for the speed and impact parameter at this point.
Suppose that the charge were all pushed away from the center and distributed uniformly on the outer rim of the disk. Find the magnitude of the electric field at point .
At a place on earth whcre thc local acceleration of gravity is 9.81 m s-2. thc spring cxtcnds 1.08 cm. Whcn the instnnTIcnt packagc is landed on Mars. it radios the information that the spring is ex
What is the force between the two alpha particles when they are 6.40 x 10-15 m apart and what is the initial magnitude of the acceleration of the alpha particles due to this force? Note that the mass