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Questions in physics

[Homework Help] A lamp hangs from the ceiling at a height of 2.9 m. If the lamp breaks and falls to the floor, what is its impact speed?

[Homework Help] What is the link between mass and the force of gravity?

[Homework Help] Is an object in free fall when no force but gravity acts on it?

[Homework Help] When is an object that has been dropped from a great height through the air closest to being in free fall? A. At its terminal velocity B. When it has its smallest acceleration C. When its velocity downward is largest D. When the velocity downward is smallest

[Homework Help] A 0.4 kg block rests on a desk. The coefficient of static friction is 0.2. You push the side of the block but do not have a spring scale to measure the force you use. The block does not move. Which statement is true about the force of static friction?

[Homework Help] A car is traveling south at a speed of 69 miles per hour and then begins traveling west but continues traveling at the same speed. Which of the following has changed? A. velocity B. gravity C. mass D. speed

[Homework Help] How will two positive charges react to one another?

[Homework Help] A 200 g block on a 50 cm long string swings in a circle. It is frictionless and swings at 75 rpm. What is its speed and the tension on the string?

[Homework Help] Which list describes the properties of a liquid? A. Fixed volume, definite shape B. Fixed volume, takes the shape of its container C. Completely fills its container, definite shape D. Completely fills its container, takes the shape of its container

[Homework Help] Is the Sun considered a star?