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A small electric immersion heater is utilized to heat 110 g of water for a cup of instant coffee. The heater is labeled "200 watts", which means that it converts electrical energy to thermal energy at this rate. Compute the time needed to bring this water from 20°C to 100°C, ignoring any heat losses.
Imagine you are holding an object in your hand with your forearm horizontal and your upper arm vertical so your elbow creates a 90° angle. what force is exerted by the biceps muscle
A 2 liter aluminum cylinder at 5 °C is filled to the brim with gasoline at the same temperature. If the aluminum and gasoline are warmed to 60 °C, how much gasoline spills out.
Two hydrogen atoms, both initially in the ground state, undergo ahead-on collision. what is the minimum speed each atom can have before the collision
A small, spherical bead of mass 2.90 g is released from rest at t = 0 from a point under the surface of a viscous liquid. The terminal speed is observed to be vT = 1.76 cm/s.\ (a) Find the value of the constant b in the equation = ?b. (b) Find the ti..
particles of charge 150 - 76 and 32 mc are on one line. the negative one is in the center 55 mm from each of the other
A dentist utilizes a mirror to examine a tooth that is 0.75 cm in front of the mirror. The image of the tooth is formed 8.0 cm behind the mirror. Decide the mirror's radius of curvature. Decide the magnification of the image.
A long solenoid has n turns per unit length and is carrying a certain current i. An electron moves with speed v inside the solenoid in a circle of radius r perpendicular to the solenoid axis.
question waves on a stick a flexible stick 2.0 m long is not fixed in any way and is free to vibrate. make clear
An AC generator supplies an rms voltage of 220 V at 60.0 Hz. It is connected in series with a 0.450 H inductor, a 5.20 %u03BCF capacitor, What is the peak voltage across the inductor
one half mole of ideal gas is taken front state a to state c. a go down to b and b to c in a line a pressure is 4.0x105
A 2400 kg car moving at an initial speed of 25 m/s along a horizontal road skids to a stop in 64 m. Find the energy dissipated by friction
Two shoppers walk from the door of mall to their car, that is 250m down a lane of cars and then turn 90 degrees to the right and walk an additional 60m what is the magnitude of the displacement of the shopper's car from mall door.
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