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1. describe the expected pattern of children and young peoples development from birth to 19years to include physical development communication and intellectual developmnet social emotional and behavioural development
three long wires hang vertically. the distance between wire 1and 2 is 20 cm. on the left, wire 1 carries an upwardcurrent of 1.4 A. the the right, wire 2 carries a downwardcurrent of 4.4 A. what is the magnitude and direction of the current in wire..
Problem: A weather balloon is designed to expand to a maximum radius of 20m at its working altitude, where the air pressure is 0.030 atm and the temperature is 200 K. If the balloon is filled at atmospheric pressure of 300 K, what is the radius at li..
A beam of light with red and blue components of wavelengths 670 nm and 425 nm, respectively, strikes a slab of fused quartz at an incident angle of 37°. what is the index of refraction of the blue light
A man is trying to lift 60.0 kg off the floor by bending at thewaist. Assume that the man’s upper body weighs 455 Nand the upper body’s centre of gravity is 38 cm from thesacrum (tailbone).
What is the energy in eV of (a) a 100 MHz radio-frequency photon, (b) a visible light photon with a wavelength of 500 nm, and (c) an X-ray photon with a wavelength of 0.10 nm?
A laser peripheral iridotomy is a procedure for treating an eye condition known as narrow-angle glacoma, How many photons does the laser deliver
Calculate the gravitational force on a spacecraft 8700km above the Earth's surface if its mass is 1200kg
Physicists first attempted to understand the hydrogen atom by applying the laws of classical physics. Consider an electron of mass m and charge -e in a circular orbit of radius around a proton of charge +e. Use Newtonian physics to show that the tota..
A 75 kg passenger is seated in a cage in the Sling Shot, a carnival ride. Giant bungee cords are starched as the cage is pulled down, and then they rebound to launch the cage straight up.
At time t1 = 2.00 s, the acceleration of aparticle in counterclockwise circular motion is (3.00 m/s2) i + (6.00 m/s2) j. It moves atconstant speed. What is the radius of the path taken by the particle
in an old fashion amusement park ride passengers stand inside a 3.0m tall5.0m diameter hollow steel cylinder with their
In the Bohr model of the hydrogen atom, an electron (mass m=9.1×10^?31kg) orbits a proton at a distance of 5.3×10^?11m. How many revolutions per second does the electron make
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