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A train moving at a constant speed of 63.0 km/h moves east for 33.0 min, then in a direction 41.0° east of due north for 24.0 min, and then west for 44.0 min. What is the average velocity of the train during this run? Magnitude 1 km/h Direction 2° (counter clockwise from east)
Particles called ?-mesons are created by accelerator beams. If these particles travel at 2.80 ? 108 m/s and live 2.60 ? 10-8 s, how long do they live as viewed in the laboratory
A tennis player receives a shot with the ball (0.0600 kg) traveling horizontally at60.0m/s and returns the shot with the ball traveling horizontally at34.0m/s in the opposite direction. What work does the racquet do on the ball
A radar station locates a sinking ship at range 17.5 km and bearing 136° clockwise from north. How far apart are the plane and ship
Three resistors, R1 = 17? , R2 = 52? , and R3=R, are connected in series with a 24.0 Vbattery, find the potential difference across each resistor
A transverse wave on a string is described by the equation y(x, t) = (2.29 cm) sin[(107 rad/s)t + (18 rad/s)x]. How fast does the wave move along the string
According to kinematics(x=.5g*t2), the acceleration is dependant only upon. The mass of the object.
A soft iron bar is sitsting surrounded by two separate loops of wire. The loop on the left, L1, initially has a current flowing clockwise as viewed from the right, What will be direction of magnetic field in soft iron bar
A hollow, spherical shell with mass 2.40 kg rolls without slipping down a slope angled at 39.0 degrees. Find the friction force
King Arthur's knights use a catapult to launch a rock from their vantage point on top of the castle wall, 15 above the moat. The rock is launched at a speed of 26 and an angle of 32 above the horizontal. How far from the castle wall does the launc..
You would like to balance a meter stick on your finger. The meter stick has a mass of m = 0.2 kg. (a) How far from the end should you place your finger to balance the stick? (b) Suppose two additional masses of M = 0.1 kg are placed at the positions ..
Find a Compact Disk. find a white light source and see if you can convince yourself that you are looking at the reflection of the light source as seen in the first order m = 1 maxima, estimate the spacing between the tracks of a CD
An unknown tuning fork produces a beat frequency of 3Hz when played with a 440Hz fork, What is the frequency of the unknown fork
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