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A mass M = 25.0 kg is suspended by a massless string from the ceiling of a van which is moving with constant acceleration a, as shown in the figure. If the string makes an angle ? = 26° with respect to the vertical, what is the acceleration a of the van?What is the tension in the string?
Electromagnetic wave 1 has a maximum electric field of 55 V/m, and electromagnetic wave 2 has a maximum magnetic field of 1.5 microtesla. Calculate the average intensity of the first wave
What is the charge on the drop. A 13 kg child on a playground swing moves with a speed of 3.6 m/s when the 6.0 m long swing is at its lowest point. What is the angle that swing makes with the vertical when the child is at the highest point.
Each shot of the laser gun most favored by Rosa the Closer, the intrepid vigilante of the lawless 22nd century, Find the electric potential energy of the original capacitor when it is charged
A 1200 kg car is moving with a velocity of 20 m/s when the brakes are applied uniformly, Find the braking force on the car by finding the acceleration of the car
A 35-kg child rides a playground merry-go-round, standing 1.6 m from its center. What was the distance travelled by the child during this time
Two children tug on a toy of mass 2.0 kg. Costa pulls with a force of 10.0N [W 30degrees S]. The toy slides with an acceleration of 2.5 m/s^2 in the direction of the net force.
In very cold weather, a significant mechanism for heat loss by the human body is energy expended in warming the air taken into the lungs with each breath. How much heat is lost per hour if the respiration rate is 19.0 breaths per minute
a concave mirror has a focal length of 15.0 cm. An object is placed 18.5 cm in front of the mirror. How tall is the object placed in front of the mirror
A current of 200 rnA flows in a silver wire of radius 0.8 mm. Find the electric field within the wire
An electric field of 120000 N/C points due west at a certain spot. What is the magnitude of force that acts on a charge of -7.8C at this spot.
Physics: Speed of car at bottom of driveway; initial speed of bullet, 20 A 2.10 x 10³ kg car starts from rest at the top of a 5.0 m long driveway that is sloped at 20° with the horizontal. If an average friction force of 4.0 x 10³ N impedes the mo..
The skater farthest out has a mass of 58.0 kg and is 7.80 m from the pivot. He is skating at a speed of 6.40 m/s. Find out the magnitude of the centripetal force that acts on him.
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