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1. When a net force of 145 N is applied to a certain object, it accelerates at a rate of 3.5 m/s2. Find the mass of the object in kg.
2. A person weighs 190 lb. Find the mass in kg.
3. The mass of a person is 75 kg. Find the wight (a) on the Earth, (b) on the moon The wight must be given in pounds.
4. The weight of a person on the earth is 145 lb. Find her weight on Mars (gmars=3.8 m/s2).
5. A lamp hangs in equilibrium from the ceiling. The mass of the lamp is 14kg. What force must be applied (magnitude and direction) to keep the lamp in equilibrium?
6. A 50 kg box is on the floor where the sliding friction force is 0 N. If we apply a force of 100 N, what will be the box acceleration in m/s2?
Adaptive basis functions. Alternatively, we might make a function y(x) from basis functions that depend on additional parameters included in the vector w.
An industrial laser is used to burn a hole through a piece of metal. The average intensity of the light is = 1.42 × 109 W/m2. find the magnetic field in the electromagnetic wave emitted by the lase
A line of charge with uniform density of 40.0 nC/m lies along the line y = -15.0 cm, between the points with coordinates x = 0 and x = 32.0 cm. Find the electric field it creates at the origin
Two particles are moving in one dimension. Particle one’s position is given by xt= 5t^2+3t+2 (in meters and seconds), and particle 2's acceleration is given by a= -8t (in meters per second squared and seconds). Particle 2 has an initial velocity of 2..
In order to create a double slit diffraction pattern, 600 nm light is shined onto a narrow slits 1 μm part. There is a wall 10 m behind the slit. Where on the wall in relation to the point directly behind the slit are the three brightest bands?
You put a mass on the end of a light string so that it forms a simple pendulum that swings back and forth with a period T. If you double the mass on the end of the string, the period of the pendulum will... A mass is oscillating up and down on the ..
A tungsten wire in a vacuum has length 15.0cm and radius 1.00mm. A potential difference is applied across it. What voltage drop is required across the wire
A person on a safari wants to take a photograph of a hippopotamus from a distance of 78.8 m. The animal is 4.90 m long and its image is to be 1.24 cm long on the film. What focal length lens should be used
If Michaela needs to wear reading glasses with refractive power of +3.0 D, what is her uncorrected near point
A rock is thrown vertically upward with a speed of 19.0m/s from the roof of a building that is 70.0m above the ground. What is the speed of the rock just before it strikes the ground
Two ice skaters, with masses of 40.0kg and 85.0kg , are at the center of a 60.0m -diameter circular rink. how long does the lighter skater take to reach the edge
A body of mass 6 kg is acted upon by a force which causes a displacement in it given by x = t2/4 metre where t is the time in seconds
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