A 2 kg car moving towards the right at 4 m/s collides head on with an 8 kg car moving towards the left at 2 m/s, and they stick together. After the collision, the velocity of the combined bodies is __________ m/s pointing __________

Fill in the blank(s) with correct word


0.8, towards the left

Physics & Space Science

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Two blocks in contact with each other are pushed to the right across a rough horizontal surface by the two forces shown. If the coefficient of kinetic friction between each of the blocks and the surface is 0.30, determine the magnitude of the force exerted on the 2.0-kg block by the 3.0-kg block



a.
15 N

b.
25 N

c.
11 N

d.
22 N

e.
33 N

Physics & Space Science

the event in the life of a star that begins its expansion into a giant is?

What will be an ideal response?

Physics & Space Science

What is the shortest wavelength of the Lyman series?

A) 91.16 nm B) 45.60 nm C) 121.5 nm D) 204.1 nm E) 365 nm

Physics & Space Science

Two different materials are in contact as shown in the figure. Determine the temperature distribution through the two materials after 10 minutes using a 1 inch grid as shown.

Physics & Space Science