A. Pure Element
B. Pure Compound
C. Mixture of Elements
D. Mixture of Compounds
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Physics, 20.09.2020 08:01 payshencec21
A. Pure Element
B. Pure Compound
C. Mixture of Elements
D. Mixture of Compounds
E. Mixture of Elements and Compounds
Answers: 3
Physics, 21.06.2019 23:10
Which are examples of projectile motion? choose all that apply a. a soccer ball rolling across the ground in the northeast direction b. a car turning a corner, so it is heading south c. a javelin flying through the air d. a tennis ball lobbed over the net
Answers: 1
Physics, 22.06.2019 06:30
If an atom contains 11 protons in its nucleus, predict the element with the atomic number and electronic configuration. will the number of electrons remain the same during the chemical reaction in such an atom? explain.
Answers: 3
Physics, 22.06.2019 07:20
If the ama of the inclined plane below is 2, calculate the ima and efficiency. ima = efficiency =
Answers: 1
Physics, 22.06.2019 20:20
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?
Answers: 2
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