What date on the cosmic calendar did the milky way galaxy appear?

The level of the water in the open aquarium tank goes down each day. why?

The speedometer of your automobile shows that you are proceedig at a steady speed of 80 although your automobile is in accelerated motion?

Two pure tones are sounded together. The drawing shows the pressure variations of the two sound waves, measured with respect to atmospheric pressure, where t1 = 0.0220 s and t2 = 0.0242 s. What is the beat frequency?

The flywheel rotates with an angular velocity of v = (0.005u2) rad>s, where u is in radians. determine the angular acceleration when it has rotated 20 revolutions.

What happens to particles of the medium in a mechanical wave?

What is the final velocity of the combined bumper cars A 225 kg red bumper car is moving at 3.0 m/s. It hits a stationary 180 kg blue bumper car. The red and blue bumper cars combine and hit a stationary green bumper car of mass 150 kg.

0.4-L glass of water at 20°C is to be cooled with ice to 5°C. The density of water is 1 kg/L, and the specific heat of water at room temperature is c = 4.18 kJ/kg·°C. The specific heat of ice at about 0°C is c = 2.11 kJ/kg·°C.

Regions in a sound wave where particles are farthest apart are called

What will happen to thermal condictivity of a substance if its thickness is doubled? Also give reason.

Each part and area of the ear have specific functions in the hearing process. In which of the following parts of the ear are sound waves changed into a signal the brain can understand?