A 2-kg object is dropped from a height of 10 meters. Using the formula (use g=10m/s2), the potential energy is calculated as . If the object strikes the ground with a speed of 5 m/s, then using the formula , the kinetic energy is 100 joules. This requires that of energy is turned into and eventually released to its surroundings.

Lymphocytes known as blastocysts make antibodies that fight infection. select the best answer from the choices provided t f

Suppose you have three polarizing filters, with the second at an angle of 42∘ to the first and the third at an angle of 90∘ to the first. by what perfect will the original intensity of unpolarized light be reduced to after passing through all three filters?

(2) (a) you have a simple circuit that consists of only a battery (δvbat=1.5v) and two resistors with resistance r1=10ω and r2=5ω, connected in series with each other. what is the current running through the battery? (b) you re-arrange your circuit so now r2 is attached in parallel to r1 rather than in series. what is the current running through the battery? (c) you add an additional resistor r3=7ω on the same branch as r2. what is the current running through the battery? (d) what is the power dissipated in r3?