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Asteroid of mass 10^16 kg is travelling in the equatorial plane of Earth. It hits the surface at 45°. After the impact the day shortens by 1% (15 mins). How fast was the asteroid - comment? Neglect effects of atmosphere. Consider only inelastic collision.

Key idea - total angular momentum of the system is conserved. Before the collision: angular momentum of earth is given by LE=IwE, here wE is the angular velocity of Ea...

JK
Answered by Jiri K. Physics tutor
2282 Views

What are the steps contained in action potential production?

The first step of the production of an action potential is a stimulus, which is a signal that excites the cell membrane causing Na+ ion channels to open. These channels are called voltage gated ion channe...

MM
Answered by Megan M. Biology tutor
2698 Views

The enthalpy of combustion of ethanol is −1371 kJ mol−1 . The density of ethanol is 0.789 g cm−3 . Calculate the heat energy released in kJ when 1 dm3 of ethanol is burned.

1 dm3 of ethanol is equal to 1000 cm3, so the mass of ethanol used is =density x volume = 0.789 g cm-3 x 1000 cm3 = 789gMolar mass of ethanol = (2x12)+(6x1) +(1x16)= 46 g mol-1Moles of ethanol = mass/mola...

SL
Answered by Sophie L. Chemistry tutor
16272 Views

Company A has demand function q=2p+5, and supply function q=10p. What is equilibrium price and quantity

P=5/8Q=25/4

TE
Answered by Tom E. Economics tutor
1768 Views

A curve has equation 2(x^2)+3x+10. What is the gradient of the curve at x=3

15

TE
Answered by Tom E. Maths tutor
3750 Views

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