Tear-free shampoos are advertised as having a pH similar to that of human tears. What pH would you expect tear-free shampoos to be?

An object is moving to the right in a straight line. The net force acting on the object is also directed to the right, but the magnitude of the force is decreasing with time.

Which does not affect the strength of an electromagnet?

A car travels 40 meters in 10 seconds. Which is its speed?

Sunspots are located

An alpha particle (a helium nucleus, consisting of two protons and two neutrons) has a radius of approximately 1.6 * 10-15 m. A certain heavy nucleus contains 79 protons in addition to all its neutrons and has a radius of approximately 5.8 * 10-15 m.

In 1940, the Tacoma Narrows Bridge across the Puget Sound collapsed. The bridge was a suspension bridge. The wind blowing through the narrows matched the natural frequency of the bridge.

What has more momentum: a sports car moving at 100 mph or a train that is not moving?

What is your mass in kilograms?

The dimensions of a block that weighs 30 N are 0.23 mx 0.12 mx 0.075 m. What pressure does the brick exert on the ground if it is resting on its largest face?

What is the current in a circuit with a 9.0 V battery and a resistance of 36.0 Ω?