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Q1. A cannonball launched with an initial velocity of 161 m/s at the angle of 45 degrees follows a parabolic path and hits a balloon at the top of its trajectory. Neglect air resistance, how fast is it going when it hits the balloon? What is the acceleration of the cannonball just before it hits balloon?
Q2. A 430 g ball swings in a vertical circle at the end of a 1.68-m-long string. When the ball is at the bottom of the circle, the tension in string is 13 N. What is the speed of the ball at that point?
What is the terminal speed of a 5.6 kg spherical ball with a radius of 3.0 cm and a drag coefficient of 1.55? The density of the air through which the ball falls is 1.2 kg/m3
A ship, carrying fresh water to a desert island in the Caribbean, has a horizontal cross-sectional area of 2790m2 at the waterline. How much water was delivered
What is the ratio of the cardinals magnitude. One mole of tungsten (6 1023 atoms) has a mass of 184 grams, and its density is 19.3 grams per cubic centimeter. You have a long thin bar of tungsten, 2.3 m long, with a square cross section, 0.15 cm on..
For a movie scene, a 75kg stuntman drops from a tree onto a 55kg sled that is moving on a frozen lake with a velocity of 15m/s toward the shore. What is the speed of the sled after the stuntman is on board
These two questions should take less than five minutes to answer. Calculate the angle for the third-order maximum of 610 nm wavelength yellow light falling on double slits separated by 0.100 mm
q1. an archer puts a 0.30 kg arrow to the bowstring. an average force of 201 n is exerted to draw the string back 1.3
A 80 pF capacitor is charged to a potential difference of 140 V, and the charging battery is disconnected. what is the capacitance of this second capacitor
Two indentical spaceships are travelling in the same direction. an observer on earth measure the first to have a speed of 0.80c, determine the speed of second spaceship
question1a creamy salad dressing is completed of heavy cream corn oil and vinegar as well as a pinch of dry mustard
Graphically determine the resultant of the following three vector displacements: (a) 34m, 25 degrees north of east ;(b) 48m, 33 degrees east of north; and (c) 22m, 56 degrees west of south.
A bullet of mass 30 g collides completely inelastically with a ballistic pendulum of mass 2.5 kg. Calculate the velocity of the bullet right before it collides with the pendulum
A rock with mass 2.0 kg is projected from the ground with an initial velocity that has magnitude 14.0 m/s, what is the gravitational potential energy of the rock
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