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the electric field 5.0 cm from a very long charged wire is 2000 N/C and directed toward the wire. What is the sign of the charge on the wire? What is the linear charge density λ on the wire?
A person carries a long pole of mass 14 kg and length 3.0 m at an angle of 60 degrees. Find the magnitude of the torque on the pole due to gravity.
A typical automobile consumes about 70 kW of power from the gas tank. How many 100-watt light bulbs could this light up, if the energy were used to light electric bulbs rather than to run the car?
Consider the HIV enzyme called protease. The amino acid residues at the active site are highly hydrophobic. In designing a drug that would bind to the active site and jam it, researchers should use wh
A uniform electric field of strength E = 334 N/C passes through a flat surface at an angle of 0.866 radians. The electric flux is 455 (N/C)·m2. What is the area of the surface?
A toy train rolls around a horizontal 1.3--diameter track. The coefficient of rolling friction is 0.10. What is the magnitude of the train's angular acceleration after it is released? (found)
Which ion is direclty responsible for the release of neurotrasmitters
How is breathing regulated? Why do we ultimately breathe to maintain homeostasis?
A cannonball launched with an initial velocity of 121 m/s at and angle of 35° follows a parabolic path and hits a balloon at the top of its trajectory. Neglecting air resistance, how fast is it
1.How long would it take the pendulum to complete one revolution at the north pole?
You place one end of the pole on a fence post and hold the other end of the pole 35cm from its tip. How much force must you exert to keep the pole motionless in a horizontal position?
If the length of the gun barrel is 0.80 , what is the magnitude of the accelerating force? (Assume the acceleration to be constant.)
Consider a civilization broadcasting a signal with a power of 1.5×104 watts. The Arecibo radio telescope, which is about 300 meters in diameter, could detect this signal if it is coming from a
Describe those specific recommendations.
If a 2m telescope is observing a wavelength of 600nm, what's the smallest resolvable angle in arc seconds?
A 1300 kg car drives around a flat 190 m diameter circular track at 30 m/s. What is the magnitude and direction of the net force on the car?
In determination of the volume of the irregularly shaped objected, any air bubbles sticking to the surface of the object when it submerged caused systematic errors. Will this error give and experime
An ocean liner leaves New York City and travels 33.0° north of east for 297 km. How far east and how far north has it gone? In other words, what are the magnitudes of the components of the ship
30 kg car travels at 90 km/h around a curve with a radius of 140 m. What should the banking angle of the curve be so that the only force between the pavement and tires of the car is the normal reac
An object of weight 1575 N hangs on another cable attached to the boom's free end. Find the tension T in the supporting cable.
A train 350 m long is moving on a straight track with a speed of 84.4 km/h. The engineer applies the brakes at a crossing, and later the train's last car passes the crossing with a speed of 16.3 km/
An object is dropped from an altitude of 1.10R above Earth's surface. Where R is the radius of the earth. What would be the speed of the object just before it hits Earth
Determining the Percentage of Calories and Fat Grams from Fat Intakes assignment. Please number and type out each question before each answer.
Find its centripetal acceleration. It continues to fly along the same horizontal arc but increases its speed at the rate of 1.03 m/s2.
Trace the impulse, listing the steps in as much detail as possible