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Q1. The press box at a baseball park is 32ft above the ground. A reporter in the press box looks at an angle of 15 degree below the horizontal to see second base. What is the horizontal distance from the press box to second base?
Q2. A ladder 7.09 m long leans against the side of a building. If the ladder is inclined at an angle of 79.50° to the horizontal, what is the horizontal distance from the bottom of the ladder to the building?
The equations of force and motion objective questions.
How much energy is given to the cell during this pulse. How many years would it take the earth to move 1.0 mm at this speed.
A person wears a hearing aid that uniformly increases the intensity level of all audible frequencies of sound by 29.7 dB. The hearing aid picks up sound having a frequency of 250 Hz at an intensity of 3.10 10-11 W/m2. What is intensity delivered to t..
A plane is headed east with an air speed of 205.0 m/s. The wind blows southeast at 32.0 m/s. Determine the velocity of the plane relative to the earth.
The mass m =1 kg is set up as a pendulum of length 0.6m as shown on the diagram. Initially in the position of h = 0.2m above the lowest point, and the pendulum is given initial speed of 1m/s. What is the largest mass M that might be temporarily lifte..
Sketch on Eratosthenes' method, if two observers are due north and south of each other and are separated by 700 km, what is the circumference of their spherical world if they see same star on their meridian at altitudes of 26 degrees and 47 degrees r..
A 100-kg halfback running north with a speed of 12 m/s is tackled by a 110-kg opponent running south with a speed of 4.0 m/s. If collision is completely inelastic and head-on, compute the speed of the players just after the tackle.
A Cassegrain astronomical telescope uses two mirrors to form the image. Compute the radius of curvature of a secondary mirror
Charge is distributed with constant volume density D throughout the rectangular box with length a, width b and height c.
A 1035 kg car carrying four 78 kg people travels over a rough "washboard" dirt road with corrugations 5.0 m apart which causes the car to bounce on its spring suspension. The car bounces with maximum amplitude while its speed is 16 km/h. The car now ..
You're driving down the highway late one night at 18 when a deer steps onto the road 36 in front of you. The reaction time before stepping on the brakes is 0.50, and the maximum deceleration of your car is 12.
A truck travels beneath an airplane that is moving 190 km/h at an angle of 26? to the ground.
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