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A ball is thrown with a speed of 19 m/s and at an angle of 43degrees. How high does it go above the cliff to the nearest tenthof a meter?the answer is 8.6, but I don't know how to find the formula to findthis nuber, can anyone help me out??
An alpha particle, the nucleus of a helium atom, has a mass of6.7 x 10-27 kg and a charge of 3.2 x 10-19 C.It floats at rest above a charged horizontal sheet with uniformcharge density on it surface.a.) What will be the magnitude and direction of an electric fieldthat will balance its weight?b.) Using Gauss's Law, find the charge per unit area on thehorizontal sheet
9.109 x10-31 kg
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Ques:
The mass of an electron is me = 9.109x10^ā31 kg, and the speed of light is c = 3x10^8 m/s. Its rest energy m_ec^2 = 8.2x10^ā14 J or m_e^c2=0.51x10^6 eV, where 1 eV=1.6x10^ā19 J. If relativity were not true, find what accelerating voltage V_acc would be enough to accelerate the electron starting from rest to a final speed equal to the speed of light, that is v_final = c.