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1 Describe why digestion of lipids is difficult for digestive enzymes? What must happen to fats/lipids in order for digestion to be complete?
A person exerts a horizontal force of F = 169 N in the test apparatus shown in the drawing. (h = 0.32 m.) Find the horizontal force M that his flexor muscle exerts on his forearm.
What is the smallest thickness of a soap film (n=1.38) that would appear black if illuminated with 510 light? Assume there is air on both sides of the soap film.
Characteristic of cell membranes may explain why fat soluble substances such as chloroform and ether rapidly affect cells?
Two carts with masses of 10.6 kg and 2.5 kg, respectively, move in opposite directions on a frictionless horizontal track with speeds of 6.7 m/s and 3.5 m/s, respectively. The carts stick together
During a snowball fight, two snowballs travelling towards each other collide head-on. The first is moving east at a speed of 15.3 m/s and has a mass of 0.450 kg. The second is moving west at 13.5 m
If one observer records a sound level of 52.8 dB and the other records a sound level of 83.5 dB, how far is the speaker from each observer? Enter the longest distance first.
A 4.3 kg block slides along a frictionless surface at a constant velocity of 6.2 m/s in the positive direction and collides head-on with a stationary block in an elastic collision. After the collis
Two crates, of mass m1 = 45 kg and m2 = 115 kg, are in contact and at rest on a horizontal surface (Fig. 4-54). A 620 N force is exerted on the 45 kg crate. The coefficient of kinetic friction is 0
At what angle of incidence will green light (g = 560 nm) be most strongly reflected? Assume the film has the minimum thickness that can produce these reflections. in degrees
A 4.00-m-long, 500 kg steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 70.0 kg construction worker stands at the far
A hollow sphere (M = 7.69 kg, R = 0.648 m) is rolling without slipping on a horizontal surface with its center of mass. Find a, the magnitude of the linear acceleration of the ball on the incline.
An aquarium contains a 5-cm layer of water (n = 1.33) floating on top of carbon tetrachloride (n = 1.461). If the angle of incidence into the water from the air is 30, what is the angle of refractio
The only appropriate location for an emergency landing is 100 km north of their current position, though this still involves significant risk to the crew. Should they attempt to return to the airstr
Suppose the wire will snap when the magnitude of the tension is T = 149 N. Find x, the distance a man of mass m = 88.8 kg can climb up along the ladder before the wire snaps.
An arrow is shot from a bow at an angle of 35º above the horizontal with an initial speed of 50. m/s. What are the arrow's horizontal (x) and vertical (y) components?
In addition, the snow exerts a retarding force on the sled that points opposite to the direction of motion, and has a magnitude of 57 {rm N}. Find the acceleration of the sled and child.
Means of transport would most likely be used for moving a medium-sized molecule
A hollow cylindrical (inner radius = 1.0 mm, outer radius = 3.0 mm) conductor carries a current of 80 A parallel to its axis. This current is uniformly distributed over a cross section of the condu
If you were told that on a particular day it was raining in Vancouver, what would be the probability that this day would be winter day?
A rectangular plate has a length of (23.2 0.2) cm and a width of (7.2 0.1) cm. Calculate the area of the plate, including its uncertainty.
Then an equal number of molecules of the same gas is added to the flask, after which the absolute pressure is 1.30 times its original value. What is the final temperature?
a) Determine the acceleration of the block when x=.400m b) Describe the general behavior of the acceleration as the block slides from a location where x is large to x=0. c) Find the maximum value of
A student calculates the frequency of a waveform produced by a tuning fork to be 303 Hz. If the tuning fork is stamped with a frequency of 279 Hz, what is the percent error for the experiment?
Which structure contains the majority of genetic material within the cell?