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Problem: A crow flies 8 km west and 14 km north. A hawk flies 32 km west and 23 km north.
Part A: What is the angle between these two displacement vectors?
I need help to find the angle between these two displacement vectors.
Suppose the magnitude of the gravitational force between two spherical objects is 2000 when they are 100 apart. find the magnitude of the gravitational force between the objects
Illustrate what is the velocity of the second block after the bullet imbeds itself? (b) Find the ratio of the total kinetic energy after the collision to that before the collision.
A car dealer claims that his product will accelerate at a constant rate from rest to a speed of 200 km/hr in 8s. What estimated distance will the car travel.
A tennis ball is thrown out a window 28m above the ground at an initial velocity of 15.0 m/s and 20 degrees below the horizontal. How far does the ball move horizontally before it hits the ground?
If 70% of a radioactive sample has decayed in 5.0 x 103 years, what is the decay constant of the material
Consider two identical +53 microcoulomb point charges placed 58 cm apart. Calculate the work (in J) required to move the test charge to a point 8 cm closer to either of the charges
oppositely charged parallel plates are separated by 4.67 mm. a potential difference of 600 v exists between the
An unknown nucleus has twice the volume of a nucleus with 51 nucleons. What is the atomic mass number of the unknown nucleus
A violin string 12.2 cm long and fixed at both ends oscillates in its n = 4 mode. The speed of waves on the string is 285 m/s, and the speed of sound in air is 348 m/s. What are (a) the frequency and (b) the wavelength of the emitted sound wave?
An oscillating dipole antenna 1.60 meter long with a maximum 40 mV potential creates a 500 Hertz electromagnetic wave. Find the wavelength of the electromagnetic wave
A motorist drives south at 28.0 m/s for 3.00 min, then turns west and travels at 25.0 m/s for 2.20 min, find the average velocity and degree south of west
a 520 w carnot engine operates between constant-temperature reservoirs at 109degc and 67degc.a what is the rate at
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