Physics

A train can travel 50% faster than a car. Both start from point A at the same time and reach point B 75 kms

Answer: Option C Explanation: Let speed of the car be x kmph. Then, speed of the train =150x=3xkmph. 1002 75-75=125 x(3/2)x10 x 60 75-50=5 xx24 x =25 x24= 120 kmph.-this q and 1st a is bs ... the

Hi,did anyone know how to convert 1.80 Mg/m3 to Kn/m3 ?please!help!

Mg=mega gram Kn=kilonewton m3=meter3-You are asking how to convert a mass per unit volume to a force per unit volume. If this is correct, you have to assume a value for g, say 9.81m/s^2 (same as 9.81N

Newton's Law of Gravity Help please!

Using Newton’s law of gravity, compute the force due to the Earth’s gravitational field at the Earth’s surface acting on a person with a mass of 100 kg. Compare this value with the person’s weight. I

Robert is travelling on his cycle and has calculated to reach point A at 2 P.M. if he travels at 10 kmph, he w

question is incomplete. Explanation: Let the distance travelled by x km. Then,x-x= 2 1015 3x - 2x = 60 x = 60 km. Time taken to travel 60 km at 10 km/hr =60hrs= 6 hrs. 10 So, Robert started 6 ho

Electric charges question

It has more than one correct answers A charged particle of unit mass and charge moves with v=8i+6j m/s in a magnetic field B=2k T: a)path of particle maybe x^2 + y^2 -4x -24 = 0 b)path of particle ma

Physics pulling box problem.

How much work is done by friction by pulling a 385 kg box at 57.2° anlge for 2.60 m? The force applied is 215. answer in J-we need to know the coefficient of friction or if the box is moving at const

How to solve this physics problem (buoyancy)

Please give the equation to solve this: A block has a density of 2.70 g/cm^3 and mass of 775 g. It is submerged in a fluid with a density of .650 g/cm^3. How much of the fluid does the block displace

Intro to Physics: Speed & Acceleration

A train travelling at 10 m/s accelerates to 20 m/s in 5 seconds i) What is its acceleration ii) What will its speed be after another three seconds if it continues to accelerate at the same rate? I kn

A sphere, 0.30 m in radius, has a surface emissivity of 0.48 and is at a temperature of 600 K.

This Physical Question Drive me Crazy A sphere, 0.30 m in radius, has a surface emissivity of 0.48 and is at a temperature of 600 K. The sphere is surrounded by a concentric spherical shell whose inn

Projectile Motion Problem

A golf ball is driven at a speed of 75.0m/s at an angle of 35.0 degrees as measured from the ground. The gold ball lands 15.0m below the elevation the ball started from. Calculate: The vertical and h

What should i name/make a character made out of lead

i have this element project for science and choose to do lead. i have to make it into a character. villian? super hero? help please this is due on monday!-Rad.He is a villain powered by the uranium co

Drops of rain fall perpendicular to the roof of a parked car during a rainstorm. The drops strike the roof wit

Drops of rain fall perpendicular to the roof of a parked car during a rainstorm. The drops strike the roof with a speed of 11 m/s, and the mass of rain per second striking the roof is 0.075 kg/s. (a)

Increased wavelength means what for color

It means the color is moved towards the red end of the spectrum. http://www.antonine-education.co.uk/phys…-Shfts towards infrared(red end of the rainbow)

If you dug a tunnel throught the earth which way would you end up, normal or upside down

please answer, i wanna know :P-so your right side up as you start digging down, but as you go through the earth the gravity shifts. so you should start to rotate as you descend/ascend to the other sid

Forces Physics problem

A 5.90-kg box is sliding across the horizontal floor of an elevator. The coefficient of kinetic friction between the box and the floor is 0.420. Determine the kinetic frictional force that acts on the