6. The graph below (not to scale) shows the temperature T of 0.2 kg of a substance X when heated using a heater that uniformly supplies 25 J of heat energy every second. Heating/Cooling Curve of Substance X TO) 80 20 + A 5 10 15 20 25 30 Time (s) How many joules of heat energy are supplied to x in section DE?​

What is the power rating of the lightbulb if 3.0 a flow through it when connected to a 15 v battery

The base of a 50-meter tower is at the origin; the base of a 50-meter tree is at (0, 50, 0). the ground is flat and the z-axis points upward. the following parametric equations describe the motion of six projectiles each launched at time t = 0 in seconds. (i) r (t) = (50 + t2)k (ii) r (t) = 2t2 j + 2t2k (iii) r (t) = 50 i + 50 j + (50 − t2)k (iv) r (t) = 2t j + (50 − t2)k (v) r (t) = (50 − 2t) i + 2t j + (50 − t)k (vi) r (t) = t i + t j + tk (a) which projectile is launched from the top of the tower and goes downward? at time t = , the projectile hits the ground at point (x, y, z) = . (b) which projectile hits the top of the tree?

Which radioisotope is used in dating geological formations?