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In the 1994 movie Speed, a bus wired with explosives must maintain a speed of 50mph or the bus will explode. what is the minimum launch angle required for the jump to be successful
A 14.9 cm long tendon was found to stretch 3.50 mm by a force of 15.0 N. The tendon was approximately round with an average diameter of 8.22 mm. Calculate the Young's modulus of this tendon
A skydiver with his parachute has a combined mass of 79 kg and an approximate frontal area of 0.71 m^2. Calculate the terminal velocity of this skydiver in a horizontal position
A gymnast whose mass is 50.0 kg swings back and forth on a 4.0m long rope. What is her velocity at the bottom of the swing
What is the gravitational force between two 20-kg iron balls separated by a distance of .9 m? What is the height of the table
A gray kangaroo can bound across level ground with each jump carrying it 8.1m from the takeoff point. What is its maximum height above the ground
A thick, vertical iron pipe has an inner diameter of 0.077 m. A thin aluminum (? = 23x10-6 (C°)-1) disk, What is the temperature of the aluminum disk when the disk falls into the pipe
If the central charge shown below is displaced 0.350 nm to the right while the other charges are held in place, find the magnitude and direction of the net force
A vibration sensor, used in testing a washing machine, consists of a cube of aluminum 1.50 cm on edge mounted on one end of a strip of spring steel (like a hacksaw blade) that lies in a vertical pla
A coil of area 0.100 m2 is rotating at 70.0 rev/s with the axis of rotation perpendicular to a 0.200 T magnetic field. If the coil has 700 turns, what is the maximum emf generated in it
Block B in the figure weighs 760 N. The coefficient of static friction between block and table is 0.28; angle ? is 27°; Find the maximum weight of block A for which the system will be stationary
A 1.23-kg box slides up an incline plane with a speed of 8.6 m/s. how long will it take for the box to come to rest
the molecular weights (for the hind III fragments) beginning with the fragments nearest the origin are shown below fragment # , size in kilobase pairs (kb)
how will increasing the number of yeast cells affect the rate of ATP production by the cell (in moles ATP/hr) if the sugar concentration in the experiment is held constant
An air puck of mass \(m_{1}\) is tied to a string and allowed to revolve in a circle of radius R on a frictionless horizontal table. determine the radial force acting on the puck
A parallel plate capacitor has a potential difference between the plates of 80 V. what is the electrical energy stored by this capacitor
A string under a tension of 49.0 N is used to whirl a rock in a horizontal circle of radius 2.40 m at a speed of 20.8 m/s on a frictionless surface, What is the breaking strength, in newtons, of the
What would happen to respiration if we add a buffer or base to the external environment of the bacteria (assume bacteria is in a closed environment like a tube) How would this affect the mechanism o
A bird watcher meanders through the woods, walking 0.496 km due east, 0.754 km due south, find the magnitude (in kilometers) of the bird watcher's displacement.
he human genome project initially predicted 100,000 genes due to the number of proteins found through western blots. When near completion, computer analysis of the sequence predicted only 30,000 gen
If we add 100 ul of 0.5 mg/ml ConA and 100 ul of 1 M mannose to 800 ul of a dilute suspension of red blood cells in ConA buffer, what should we expect to happen
What is the effective resistance of a parallel combination of a very large resistance and a very small resistance, what will be the current through each resistor
You want to make one liter of a solution containing 10 mg/ml sodium phosphate, 10 mg/ml sodium chloride, and 10 mg/ml potassium nitrate. How much of each starting solution do you need to use, and ho
A 1.5-V battery is connected in series with a 3.3-k? resistor, a 4.7-k? resistor, and a 1.0-k? resistor. Calculate the current (in mA) through and the voltage (in V) across each resistor
In the circuit shown in the figure, the 6.0 ohm resistor is consuming energy at a rate of 23.0 J/s, Find the current through the ammeter in amps