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If the pion is made to travel at very high speed relative to a laboratory, its average lifetime is measured in the laboratory to be4.20×10-7s. Calculate the speed of the pion expressed as a fraction ofc.
A uniform wooden plank of mass 15kg and total length 10m rests on two supports. Find the forces of the two supports on the plank
A charge of -2.83 μC is set at the center of a compass. Find the magnitude of net electrostatic force acting on charge at the center
a particle of charge q is fixed at point p and a second particle of mass m and the same charge q is initially held a
A dipole moment is located in a uniform electric field oriented along an unknown direction. Find what was the initial angle between the direction of the dipole moment and the direction of the electric field
Two balls, of masses = 49 and = 67 , are suspended as shown in the figure. The lighter ball is pulled away to a 66 angle with the vertical and released. suppose that positive axis is directed to the right. What is the velocity of the lighter ball ..
linda pulls a sled with force 89 newtons at 30 degrees east of north. find the resultant force and direction
A helium nucleus contains two protons. What is the approximate magnitude of the electric force between these two protons
A 78.0-kilogram child starts from rest from the top of a frictionless slide that is 5.4 meters tall. The bottom of the slide is 28.6 centimetres above the ground. The kinetic friction is a constant 116. 0newtons and acts over the 5.0 meter length of ..
For a certain transverse wave, the distance among two successive crests is 1.20 m and eight crests pass a given point along the direction of travel every 14.50s. Compute the wave speed.
A 9.91 -m ladder with a mass of 22.3 kg lies flat on the ground. A painter grabs the top end of the ladder and pulls straight upward with a force of 257 N. What is the net torque acting on the ladder
A lightbulb has a resistance of 260 when operating witha potential difference of 130 V. What is the current in the light bulb
You are a member of a production crew filming a nature explorer in the Rocky Mountains. Calculate the time the explorer spends in the water if the river is 90.7 feet wide
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