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Q1. An outfielder throws a 0.150 kg baseball at a speed of 50.0 m/s and an initial angle of 30.0°. What is the kinetic energy of ball at the highest point of its motion?
Q2. A car is driven 110 km west and after that 75 km southwest. What is the displacement of the car from the point of origin (magnitude and direction)?
Q3. Assume that a binary star system consists of two stars of equal mass. They are observed to be separated by 310 million kilometres and take 4.0 Earth years to orbit about the point midway between them.
Two loudspeaker, 4.0 m apart and facing each other, play identical sounds of the same frequency. You stand halfway between them, where there is a max. of sound intensity. moving from this point toward one of the speakers, you encounter a min. of s..
question1an average human body might be considered to have a black surface of area 10m2 and surface temperature is
A train at rest emits a sound at a frequency of 1045 Hz. An observer in a car travels away from the sound source at a speed of 37 m/s. What is the frequency heard by the observer? Imagine the speed of sound in air to be 340 m/s.
A.) what is the average kinetic energy in joules of hydrogen atoms on the 5,500 degree celcius surface of the sun B.) What is the average KEof helium atomsin a region
In order for Sasha (in A-5) to feel weightless at the top of the ride, a) at what linear speed must the Ferris wheel tum? b) At this speed, how much would she appear to weigh at the bottom of the Ferris wheel.
A 36 kg girl and a 7.9 kg sled are on the frictionless ice of a frozen lake, 20 m apart but connected by a rope of negligible mass. How far from the girl's initial position do they meet
A rectangle has an area of 33.66 cm2. When both the length and width of the rectangle are increased by 1.30 cm, find the length of the shorter of the two sides of the initial rectangle
A uniform thin spherical shell has a raduis of 2.9 m and mass of 460kg and its center is located at the origin of a coordinate system. find the gravitional force of attraction between the two shells
consider the bohr model of the one ecectron atom Be+3, calculate the radius,in nm,of ground state orbital
A large electromagnet coil is connected to a 118 -Hz ac source. The coil has a resistance 450 ohms, What is the inductance of the coil
A bullet is fired from at a shooting range. The bullet hits the ground after 0.32 seconds. How far did it travel horizontally and vertically in this time
If a material increases it's length from 160m to to 163.20m when it's temperature is raised 160 degrees C, determine the coefficient of linear expansion
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