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Question: A person in a kayak starts paddling, and it accelerates from 0 to 0.8 miles/hour in a distance of 0.8 km. If the combined mass of the person and the kayak is 80 kg, what is the magnitude of the net force acting on the kayak?
A dolphin located in sea water at a temperature of 25°C emits asound directed toward the bottom of the ocean 175 m below. How much time passes before it hears anecho?
The huge volcanic eruption on the island of Krakatoa, Indonesia, in 1883 was heard on Rodrigues Island, How long did it take (in seconds) for the sound to travel to Rodrigues
The electric potential at a position located a distance of 19.2mm from a positive point charge of8.70x10-9C and 11.8 mm from asecond point charge is 1.14kV. Calculate the value of the second charge.
A spring has a spring stiffness constant , k, of 440 N/m. How much must the spring be stretched to store 25 J of potential energy. Please tell me the formula and how you arrived at your answer.
Two long straight wires carrying the same current I and separated by a distance r exert a force F on each other. What will be the force between two wires
What is the volume flow rate through the smaller pipe? answer in m^3/ second.
In a parallel plate capacitor, two plates are being discharged by a constant current. Each plate has a radius of 4.0 cm. During the discharging, at a point between the plates at radial distance 2.0 cm from the central axis, the magnetic field has ..
A traveler flew due east from city A to city B 150 miles away, and then made a connecting flight to city C 250 miles away in a direction that is 60o north of west, Find the net displacement of the person
A long-jumper leaps of the horizontal at a speed of 11.0 m/s at an angle of 20 degrees. what is his toal distance traveled
A gass has 100 J of energy in the form of heat is transfered to a system and the system does 150 J of work, what is the change in the internal energy of the system
Two ideal inductors (0.124 H, 0.433 H) are connected in series to an AC voltage source with amplitude 5.17 V and frequency 113 Hz. What is the peak current that flows in the circuit
You have an uncharged capacitor (12 x 10-6 F) and a resistor (1000 ohms) connected to a battery of 200 V at time t=0 (the switch is closed at this time). What is the charge on the capacitor at this time
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