Recent content by chipM

boiling point of water ? . but how is the mass achieved ?

Homework Statement Not sure if this is the right thread for this question but here goes : A worker pours 1.25 kg of molten lead at a temperature of 327.3 into 0.500 kg of water at a temperature of 75 C in an insulated bucket of negligible mass. Assuming no heat loss of the surroundings...

so its blue !

so photon acts like a particle when donating energy to electron and like a wave during difraction and refraction Sound waves cannot be polarized because the direction of the movement of the waves and the direction of vibration of the particles within the wave are the same in light waves the...

So its yellow ? regard question 5 about polarised lightalso i am just going to assume question 4 is right as well ? Sound waves cannot be polarized because the direction of the movement of the waves and the direction of vibration of the particles within the wave are the same in light waves...

so instead it will be light from sky to the eye ? regarding question 1 is it green ? and umm what about questiong 6?

Homework Statement (1)in which of these cases will a ripe banana appear black red yellow green or blue light ? red light (2) at the beach , you can get a sunburn while under th shade of an umbrella, why ? some UV can pass through the umbrella or reflect from the sand or water. 3)...

no because there is current outside .

is it because of the change in magnetic field causes in induced voltage, this voltage opposes the supply voltage to slow the build of current. when current become constant here is no voltage . is this it ?

Regarding 2) is it because the car spreads out the charge around the cars exterior , which cancels out the charge in the cars exterior ?

for 4) they are told to remove their jewlarry because of the magnetic field which can attract metals and as a result can pose risk to the patient or anyone in the room as the object is forced to move to the centre of the Mr system ?

for 1 is it If the vehicle is struck the charge would be distributed across the conductive surface so contact should not be made with the inside of the vehicle until it has been discharged?

cool i am on it is 1 and 3 correct though ?

Homework Statement please cheack my answears and see if they are right, please help me solve the wrong ones thankyou ! (1)if you were to expend 10 J of work to push a 1 C charge against an electric field , what would be its change of Voltage ? voltage = electric potential energy /...

hey man i still don't get how to do 2) so is the temparature change 373 ? which mean its going to be 0.5x 0.009x 373 = 0.168 . yes ?