5. Z Olsztyna w kierunku Augustowa o godzinie 12.00 wyjechała ciężarówka. Prędkość tej ciężarówki była równa 50 km/h. Jakiś czas później z Olsztyna w tę samą stronę wyruszył motocykl jadący z prędkością 70 km/h. Motocykl dogonił ciężarówkę po 20 minutach. Oblicz, po jakim czasie od chwili wyruszenia ciężarówki wyjechał motocykl.

Two red blood cells each have a mass of 9.0 multiply. gif 10-14 kg and carry a negative charge spread uniformly over their surfaces. the repulsion arising from the excess charge prevents the cells from clumping together. one cell carries −2.50 pc of charge and the other −3.10 pc, and each cell can be modeled as a sphere 7.5 μm in diameter. (a) what speed would they need when very far away from each other to get close enough to just touch? assume that there is no viscous drag from any of the surrounding liquid. answer is: 321 m/s how do i find this (b) what is the maximum acceleration of the cells in part (a)? answer is: 1.38e+10 m/s2 how did they find this answer

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

A30 kg weight lies on top of a massless piston of area a = 0.01 m2 the exterior air is at a (constant) p =1 atm and t = 27 c. the interior gas is 0.4 moles of (ideal) n2 and it has initial temperature 27.00 degrees c. 1. what is the initial pressure in the interior? a. 29.4 kpa b. 130.7 kpa c. 101.3 kpa the next three questions concern what happens when an amount of heat q is slowly added to the interior, raising the piston by 1 mm and raising the interior temperature to 27.40 c