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If it takes 2.90 min for the water to reach a boil, what volume of water, in cm^3, was in the kettle? Stainless steel is mostly iron, so you can assume its specific heat is that of iron.
A spacecraft is in empty space. It carries on board a gyroscopewith a moment of inertia of Ig = 18.5 kg·m2 aboutthe axis of the gyroscope.
What is the maximum speed with which a 1200- car can round a turn of radius 71 on a flat road if the coefficient of static friction between tires and road is 0.45?
A 84g arrow is fired from a bow whose string exerts an average force of 115N on the arrow over a distance of 78cm. What is the speed of the arrow as it leaves the bow?
Find the energy delivered to the motor by electrical transmission in 3.90 h of operation.
A skier moving at 4.60 m/s encounters a long, rough horizontal patch of snow having coefficient of kinetic friction 0.220 with her skis. How far does she travel on this patch before stopping?
In a ballistics test, a 24.0 bullet traveling horizontally at 1300 goes through a 20.0 -thick 450 stationary target and emerges with a speed of 900 . The target is free to slide on a smooth horizon
A rattle snake can strike with an acceleration equivalent to an increase in speed from 0 to 60mi/h in 1/2 s. if the rattlesnakes head weighs 0.33 lb, what average power does the rattlesnake generat
A square, 0.40 m on a side, is mounted so that it can rotate about an axis that passes through the center of the square. This axis is perpendicular to the plane of the square. A force of 26.5 N lie
T pointed in the +y direction. The mass of the proton is 1.672 × 10-27 kg. What is the magnitude of the magnetic force on the proton?
What is the magnitude of the Poynting vector from the electromagnetic wave of this signal? What is the amplitude of the magnetic component of the signal?
Two carts on a frictionless airtrack approach each other and, upon collision, both stop still. If Cart One had three times the speed of Cart Two and the sum of their masses is 2.88 kg, what is the
The weight of passengers on a roller coaster increases by 50% as the car goes through a dip with a 32 m radius of curvature. What is the car's speed at the bottom of the dip?
A baseball is thrown with a velocity of 31 m/s at an angle of 40 degrees from a height of 1.8 m. Calculate the time to peak trajectory.
The sun falls on a concave mirror and forms an image 4.4 cm from the mirror. If an object 24 mm high is placed 12.4 cm from the mirror, where will its image be formed?
A proton moving at 4.60 106 m/s through a magnetic field of magnitude 1.74 T experiences a magnetic force of magnitude 7.40 10-13 N. What is the angle between the proton's velocity and the field?
A metal sphere with radius r_a = 1.10 cm is supported on an insulating stand at the center of a hollow, metal, spherical shell with radius r_b = 9.50 cm. Charge +q is put on the inner sphere and ch
Whose total chage is q using infinite as reference point. compute the gradient of V in each region and check that it yields the correct field. Sketch V(r).
Name the two physical properties that determine the amount of thermal energy in a material whose specific heat is known
Question: If a galaxy is receding from us at 894 km/s and is located at a distance of 12 Mpc, what is the age of the universe, if the universe if flat?
An electron moves to the right with a speed of 0.82c relative to the laboratory frame. A proton moves to the left with a speed of 0.77c relative to the electron. Find the speed of the proton relati
Sketch the plot of the binding energy per nucleon versus mass number. Identify the main features. What is the origin of these features? Put your answer in terms of the semi-empirical mass formula a
What is the linear speed of a point on the turntable at the location of the dolls? (b) If the coefficient of static friction between the dolls and the turntable is 1.54, do the dolls stay on the tur
A ball is projected upward at time = 0.0 s, from a point on a roof 10 m above the ground. The ball rises, then falls and strikes the ground. The initial velocity of the ball is Consider all quantit
calculate the diameter of the ball. The density of water is ρw = 1.000 × 103 kg/m3, the density of styrofoam is ρfoam = 95.0 kg/m3 and the acceleration due to gravity is g = 9.81 m/s2.