Physics, 25.12.2019 01:31 pencil8184
Aball having a mass of 0.20 kilograms is placed at a height of 3.25 meters. if it is dropped from this height, what will be the kinetic energy of the ball
when it reaches 1.5 meters above the ground?
a.1.2 joules
b.2.2 joules
c.3.4 joules
d.3.6 joules
e.4.3 joules
Answers: 2
Physics, 22.06.2019 05:20
Given the position vector of the particle r(t)=(t+1)i+(t^2−1)j+2t k, find the particle's velocity and acceleration vectors at t=1
Answers: 1
Physics, 22.06.2019 10:30
Light from a sodium lamp passes through a diffraction grating that has 1000 slits per millimeter. the interference pattern is viewed on a screen 1.000 m behind the grating. the first (m = 1) two bright yellow fringes that are visible are 0.7288 m and 0.7300 m from the central maximum. what are the wavelengths of these two fringes?
Answers: 2
Physics, 22.06.2019 14:30
Exercise 2. find the wavelength of a photon emitted when an electron jumps from the n = 3 energy level down to the n = 2 energy level. where is this photon in the electromagnetic spectrum?
Answers: 3
Aball having a mass of 0.20 kilograms is placed at a height of 3.25 meters. if it is dropped from th...
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