A uniform meterstick balances on a fulcrum placed at the 70.0-cm mark when a weight w is placed at the 90.0-cm mark. What is the weight of the meterstick?
a. w b. 1.0w
c. w/1.0 d. 0.70w
e. 0.90w
b
You might also like to view...
Must all physically reasonable wave functions be wavelike in classically allowed regions and exponential-like in forbidden regions (A), or does this apply only to solutions to the Schrödinger equation (B)?
A. Forbidden regions B. Does this apply only to solutions to the Schrödinger equation
An infinite universe is a basic assumption of the cosmological principle
Indicate whether the statement is true or false
If you connect two identical storage batteries together in series ("+" to "-" to "-" to "+"), and place them in a circuit, the combination will provide
A) zero volts. B) twice the voltage, and different currents will flow through each. C) twice the voltage, and the same current will flow through each. D) the same voltage, and different currents will flow through each. E) the same voltage, and the same current will flow through each.
An electron moves with a speed of 3.0 × 104 m/s perpendicular to a uniform magnetic field of 0.40 T. What is the magnitude of the magnetic force on the electron?
A) 4.8 × 10-14 N B) 1.9 × 10-15 N C) 5 × 10-20 N D) 2.2 × 10-24 N E) zero