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A hunter wishes to cross a river that is 1.9 km wide and flows with a speed of 5.0 km/h parallel to its banks. The hunter uses a small powerboat that moves at a maximum speed of 13 km/h with respect
Light passes through a 220 lines/mm grating and is observed on a 1.0-{rm m}-wide screen located 1.0 m behind the grating. Three bright fringes are seen on both sides of the central maximum. What are
Find the flux of the Earth's magnetic field of magnitude 5.00 × 10-5 T through a square loop of area 20.0 cm2 (a) when the field is perpendicular to the plane of the loop, (b) when the field m
Bowling ball traveling with constant speed hits the pins at the end of a bowling lane 18.0 long. The bowler hears the sound of the ball hitting the pins 2.20 after the ball is released from his hand
An airplane has a speed 600 km/h. If a wind begins blowing from the southwest at a speed of 88.9 km/h (average). In what direction should the pilot aim the plane so that it will fly due south?
A potential difference of 102 mV exists between the inner and outer surfaces of a cell membrane. The inner surface is negative relative to the outer surface. How much work is required to eject a pos
during a negligible amount of time, he changes the magnitude of his acceleration to 1.8 m/s, he continues in the same direction for another 1.2 s, until he reaches a speed of 3.4 m/s. What is the va
An airplane flies 370 km due east, makes a right-angle turn, and then flies 460 km due north. Find the magnitude of the plane's displacement from its starting point. Neglect the curvature of the ear
A particular race car can cover a quarter mile track (402 m) in 7.00 s starting from a standstill. Assuming the acceleration is constant, how many g's, does the driver experience?
A boat is heading due north as it crosses a wide river with a speed of 13.5 km/h relative to the water. The river has a current such that the water moves with a uniform speed 4.30 km/h due east rela
To give a 19- child a ride, two teenagers pull on a 3.0- sled with ropes, as indicated in the figure . Both teenagers pull with a force of 55 at an angle of 35 relative to the forward direction, whi
A microphone is located on the line connecting two speakers that are 0.523 m apart and oscillating 180° out of phase. The microphone is 2.03 m from the midpoint of the two speakers. (a) What is
A man pushing a mop across a floor causes the mop to undergo two displacements. The first has a magnitude of 200 cm and makes an angle of 170° with the positive x axis. The resultant displacemen
A particle undergoes two displacements, measured from the positive x-axis, with counter- clockwise positive. The first has a magnitude of 11 m and makes an angle of 68? with the positive x axis. The
The driver of a 1730 kg car traveling on a horizontal road at 102 km/h suddenly applies the brakes. Due to a slippery pavement, the friction of the road on the tires of the car, which is what slows
An 8.00 g bullet is fired into a 220 g block that is initially at rest at the edge of a table of 1.00 m height. The bullet remains in the block, and after the impact the block lands d = 1.6 m from t
Clay pigeons can be thrown vertically with an initial velocity of 6 m/s. How much time must elapse between throws if a second pigeon is to collide with the first 1.2 m above the point of release?
A motorist is traveling at 16 m/s when he sees a deer in the road 38 m ahead. If the maximum negative acceleration of the vehicle is -5 m/s2, what is the maximum reaction time of the motorist that w
A certain loudspeaker has a diameter of 44 cm. At what frequency will the wavelength of the sound it emits in air be equal to its diameter? Figure out the answer in Hz, but do not enter units. (Note
A ship sets out to sail to a point 107 km due north. An unexpected storm blows the ship to a point 126 km due east of its starting point. In what direction (as an angle from due east, where north of
When you see a traffic light turn red you apply the brakes until you come to a stop. If your initial speed was 12m/s, and you were heading due west, what was your average velocity during braking? as
At a particular instant in time a particle has a velocity of 6.00 m/s. Over the next 4.00 s it experiences an average acceleration of -3.00 m/s2. Determine its velocity at the end of this three-sec
To give a 22- child a ride, two teenagers pull on a 3.8- sled with ropes, as indicated in the figure . Both teenagers pull with a force of 55 at an angle of 35 relative to the forward direction, whi
A ball is dropped from a height of 3 meters and rebounds from a height of 2 meters. What is the velocity of the ball before it hits the floor? What is the velocity of the bell before it leave the fl
The speed of sound is 344 m/s. You have built a really fantastic car that can really go fast. If the car can accelerate at 22.4 m/s, how much time till you reach the speed of sound? How many kilomet