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Three forces in the x-y plane act on a 7.20 kg mass: 13.10 N directed at 503.0o, 11.80 N directed at 130.0o, and 10.40 N directed at 224.0o. All angles are measured from the positive x-axis, with positive angles in the counter-clockwise direction. Calculate the magnitude of the acceleration.
A 1500 kg car is approaching the intersection at 11 m/s. He is 40 m away from the intersection. Find the minimum acceleration needed for the car to come to rest
Calculate the expectation values of the energy,L^2 and L_z L^2 and L_z L^2 and L_z
Suppose a single electron orbits about a nucleus containing two protons (+2e), as would be the case for a helium atom from which one of the naturally occuring electrons is removed. The radius of the orbit is 3.45 × 10-11 m. Determine the magnitude..
A 30-meter steel tape is correct at a temperature of 20.0(C). The distance between two points, as measured by this tape on a day when the temperature is 5 (C), is 25.970m. What is the true distance between the points?
q1. an object falls because of gravity at a rate of -9.80 ms2 - sign is indicative of a downward direction for 10.00
A platinum resistance thermometer has resistances of 220.0 when placed in a 0°C ice bath, What is the melting point of this substance
Two spherical objects have a combined mass of 200. The gravitational attraction between them is 8.01×10-6 while their centers are 21.0 apart.
The aorta has an inside diameter of approximately 2.1 cm, compared to that of a capillary, which is about 1.0 × 10^?5 m (10µm). how many capillaries does the circulatory system have
A motorist drives north for 35 minutes at 85 km/h and then stops for 15.0 minutes. He then continues north, traveling an additional 130 km in 2 h.
A rubber ball (150g) confined to move in the x direction, bounces elastically back and forth at 9m/s between two walls, Calculate the average pressure on this wall
A 0.031 kg aluminum bullet traveling at 471 m/s strikes an armor plate and comes to a stop, what is the bullet's temperature change in degrees Celsius
A ball is thrown so that its initial vertical and horizontal components of velocity are 60 m/s and 15 m/s, respectively. Estimate the maximum height the ball reaches
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