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calculate the specific heat of a metal from the following data a container made of the metal has a mass of 32 kg and contains 20 kg of water a17 kg
the variable period of a moon of jupiter which is the basis of measurement of the speed of light in roemers method whoever heis is regarded as the
a two 40 g ice cubes are dropped into 220 g of water in a thermally insulated container if the water was initially at25degc and the ice came
an open barge has the dimensions 22x40x12m if the bargeis made out of 40-cm-thick steel plate on each of its four sides and its bottom what mass of
a 30g bullet strikes a 650kg block attached to a fixed horizontal spring whose spring constant is 590x103nm and sets it into vibration with an
instructors own problem1 on the surface of some strange planet mr spock finds his weight to be1200nhe then goes 5000km above the surface and finds
in 10s 50x1023 nitrogen molecules strike an area of80cm2 at a speed of 300ms what is the pressure mass of one nitrogen molecule 468x10-26 kg i
find an expression for the angular frequencya small object oscillates back and forth at the bottom of frictionless hemispherical bow the radius of
find the minimum angle at which a roadbed should be bankeddetermine the minimum angle at which a roadbed should be banked so that a car traveling at
as seen from above a playground carousel is rotating counterclockwise about its center on frictionless bearings a person standing still on the ground
an object of mass 50 kilograms initially travelling at 120ms horizontally enters a region where there is a coefficient of kinetic friction of 027a
evaluate the tension in the rope a muscle builder holds the ends of a masslessrope at the center of the rope a 15kg ball is hung what is the tension
two trains on separate tracks move toward one another train 1has a speed of 140 kmh train 2 speed of 550 kmh train 2 blows it shorn emitting a
determine the amount of heat transfer required to convert 200 g0200kg of ice to vapor if the initial temperature of the ice is25 degrees c and the
describe how dewar flasks limit energy transfera dewar flask thermos is a device that resists energy transfer explain how dewar flasks limit
an object is placed 250cm from a thin converging lens a screen is positioned so that a sharp image of the object is seen on the screen when the
helium gas with a volume of 260 l under a pressure of 130atm and at a temperature of 410 degrees is warmed until both pressure and volume are doubled
one way to keep the contents of a garage from becoming too cold on a night when severe subfreezing temperature is forecast is to put a tub of
a mass m moves horizontally along a smooth rail a pendulum is hung from m with a weightless rod and mass m at its end find the eigen
a 2400-kg satellite is in a circular orbit around a planet the satellite travels with a constant speed of 667x10 3 ms what is the acceleration of the
a 20-kg projectile is fired with initial velocity components v0x 30ms and v0y 40ms from a point on the earths surface neglect any effects due to air
a particle with a charge of -15uc and a mass of 25x10-6kgis released from rest at point a and accelerates toward point b arriving there with a speed
two 1100-kg cars are travelling 95 kmh in opposite directions when they collide and are brought to rest estimate the change in entropy of the
the supersonic airliner concorde is 621 m long when sitting on the ground on a typical15degreesc day it is primarily made of aluminum in flight at
the magnitude of the force vector f is 270 newtons they component of this vector is directed along the y axis and has magnitude of 150 n the x