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Two forces acts on a 55 kg object. One force has a magnitude of 65 N and is directed 59° clockwise from the positive x-axis. The other force has a magnitude of 35 N and is directed 32° clockwise from the positive y-axis. What is the magnitude of this object’s acceleration?
The activity of a freshly prepared radioactive sample is 1010 disintegrations per second, whose mean life is 109 s. find the mass (in mg) of the radioactive sample
If a curve with a radius of 85 m is properly banked for a car travelling 68 km/h, what must be the coefficient of static friction for a car not to skid when travelling at 97 km/h.
Acharge of q= +7.50μC is located in an electric field. The x andy components of the electric field are Ex = 6.00 * 10^3 N/C and Ey= 8.00x 10^3 N/C, respectively, What is the magnitude of the force on the charge
An ideal spring has the spring constant k = 428 N/m. find the distance this spring must be stretched from its equilibrium position for 28 J of work to be done.
A startled armadillo leaps upward rising 0.550 m in the first 0.203 is. (a) What is its initial speed as it leaves the ground? m/s (b) What is its speed at the height of 0.550 m? m/s (c) How much higher does it go?
An amount of an ideal monatomic gas has an initial pressure of 210 kPa, an initial volume of 1.2x10-3 m3, at an initial temperature of 350 K. The gas now undergoes three processes:
A spring is hanging from the ceiling. Attaching a 560 g mass to the spring causes it to stretch 22.0 cm in order to come to equilibrium. At what position or positions does it have this speed
What is the resistance of a 1.7m -long copper wire that is 0.50mm in diameter? (Answer should be in ohms)
if a hot reservoir of an engine is 300k and cold reservoir 200k, what is the carnot efficiency of this engine
A concave mirror has a focal length of 33.8 cm. The distance between an object and its image is 49.7 cm. Find (a) the object and (b) the image distance assuming that the object lies beyond the center of curvature.
A force applied to an object of mass m1 produces an acceleration of 3.00 m/s2. find its acceleration under the action of the force
The temperature of a copper bar rises by 10.0°C when it absorbs 2.03 kJ of energy by heat. The mass of the bar is 525 g
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