A person measures his heart rate by counting the number of beats in 30 s. if 33 ± 2 beats are counted in 30.0 ± 0.4 s, what is the heart rate and its uncertainty in beats per minute?

Some folded mountains result from the collision of continental plates. a. True b. False

Give two examples of when you would need to use the measure skill in science?

An inclined plane of angle θ has a spring of force constant k fastened securely at the bottom so that the spring is parallel to the surface. A block of mass m is placed on the plane at a distance d from the spring.

A (n) is produced around a wire when an electrical current is in the wire.

How come walking converts chemical energy into mechanical energy

How are hypotheses and theories related to each other?

a bike can climb the inclined road at uniform speed of 72 km/hr by applying force 500N what will be the power applied by the bike?

According to bohr's theory, how do electrons move around the nucleus

On a very hot summer day, railroad tracks can buckle, causing train delays and derailments. Select the best reason below for the buckling.

How long will it take you to swim 100 meters if you swim at a speed of 12.5 m/s?