The standard kilogram is a platinum-iridium cylinder 39 mm in height and 39 mm in diameter. What is the density of the material?
What will be an ideal response?
21475 kg/m3
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The sentence “Brass is an element in the periodic table” is a logical statement.
Indicate whether the statement is true or false
Which of the following is(are) found mainly between Mars and Jupiter?
a. Asteroids b. Meteoroids c. Comets d. Interplanetary dust
A ball is dropped from a rooftop of a building and falls for two seconds. The acceleration of gravity is 9.8 m/s2 . The ball is referred to at the two second time. The acceleration is __________
Fill in the blank(s) with correct word
A hockey puck slides off the edge of a table with an initial velocity of 20.0 m/s. The height of the table above the ground is 2.0 m. What is the magnitude of the vertical component of the velocity of the puck just before it hits the ground?
A) 20.0 m/s B) 6.26 m/s C) 12.5 m/s D) 19.6 m/s E) 21 m/s