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A car carrying a 80-{rm kg} test dummy crashes into a wall at 28 m/s and is brought to rest in 0.10 {rm s}. Find the average force exerted by the seat belt on the dummy.
Write a narrative of the possible causes and treatments for two common forms of cancer. Your narrative should be a minimum of ½ page. Must have references.
A football player runs directly down the field for 42 mbefore turning to the right at an angle of 35 from his original direction and running an additional 14 m before being tackled.
In a one-dimensional elastic collision a ball of mass 0.52 kg, moving with velocity 5.2 m/s, strikes an initially stationary ball of mass 0.81 kg. Find the final velocity of the initially moving ba
How does anaerobic respiration occur in glycolysis? What process of anaerobic respiration takes place? Can that process occur in prokaryotes and eukaryotes?
The radar system at an airport broadcasts 11 GHz with 150 kW. What is the electric field strength of the microwave signal received back at the airport 160mu.seconds later?
A 4-kg projectile travels with a horizontal v velocity of 600 m/s before it explodes and breaks into two fragments A and B of mass 1.5 kg and 2.5 kg, respectively. If the fragments travel along the
That make equal angles with the ceiling. Each cable has a length of l = 3.90 {rm m}. What is the tension T in each of the cables? Use 9.80 {rm m/s}^2 for the magnitude of the acceleration due to grav
Under these conditions the gauge pressure is measured to be 1.70 atm (about 25 1b/ine2)A. fter the car is driven on the highway for 30 min, the temperature of the air in the tires has risen to 45.0&
Comparisons of amino acid sequences can shed light on evolutionary divergence of related species. Would you expect all the proteins of given set of living species to show the same degree of divergence
A ranger in a national park is driving at 41 km/h when a deer jumps onto the road 64 m ahead of the vehicle. After a reaction time of t s, the ranger applies the brakes to produce an acceleration o
A 1380 kg geosynchronous satellite orbits a planet similar to Earth at a radius 1.95 × 10 5 km from the planet's center. Its angular speed at this radius is the same as the rotational speed of
Draw a possible trajectory for which the puck makes three collisions with only two sides of the square, and draw a possible trajectory for which the puck makes three collisions with three sides of t
A bubble having a diameter of 1.0 cm is released from a depth of 5 m from the bottom of a swimming pool. What will the diameter of the bubble be when it reaches the surface? The temperature of the
How does the addition of a catalyst affect the energy of activation of a chemical reaction?
The dielectric plate is now slowly pulled out of the capacitor, which remains connected to the battery. Find the energy of the capacitor at the moment when the capacitor is half-filled with the diel
If the pH of a solution is 7, what is the H+ concentration of a solution? What is the H+ concentration of a solution with a pH of 8? (Be sure to include units.) Of these two solutions, which of these
Find the tension in each of the two ropes supporting a hammock if one is at an angle of = 12 above the horizontal and the other is at an angle of = 39 above the horizontal.
A 291-kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 30.0° with respect to the horizontal. The coefficient of kinetic frictio
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A 20-kg traffic light hangs midway on a cable between two poles 40 meters apart. If the sag in the cable is 0.40 meters, what is the tension in each side of the cable?
Three long wires (wire 1, wire 2, and wire 3) hang vertically. The distance between wire 1 and wire 2 is 20.0 cm. Find the following the position of wire 3
A 4 V flashlight battery has an internal resistance of 1.5 ohm when new, and 5 ohm when old. Imagine this is a resistor in series with the battery mounted INSIDE the battery itself, which describes
How could you determine whether the turbidity in your nutrient broth tube was from a mixture of different microbes or from the growth of only one kind of microbe?
A 20-kg traffic light hangs midway on a cable between two poles 4meters apart. If the sag in the cable is 0.40 meters, what is the tension in each side of the cable?