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Q. To measure the weight of the cat, a person places a 100N box and a 60N box from the ends of a uniform pole that is pivoted at its center. The system balances when the cat stands at a point 1/4 of the rods length from the 60N box. What is the approximate mass of the cat?
Q. You are standing between two speakers that are separated by 72 m. Both speakers are playing a pure tone of 277 Hz. You begin running directly toward one of the speakers, and you measure a beat frequency of 12 Hz. How fast are you running?
How many electrons are there in a tablespoon. Find the tension in each cable. right cable and left cable.
A 3.9 kg block originally at rest is pulled to the right along a horizontal, frictionless surface by a constant, horizontal force of 18 N.
A wrench 0.3 meters long lies along the positive y-axis, and grips a bolt at the origin. A force is applied in the direction of langle 0, 1, 2rangle at the end of the wrench. Find out the magnitude of the force in newtons needed to give 100 newton..
What are the total displacement and angle of displacement
The yellow light from a helium discharge tube has a wavelength of 587.50. When this light illuminates a certain diffraction grating it produces a first-order principal maximum at an angle of 1.050.
Potassium iodide has an interplanar spacing of d = 0.296 nm. A monochromatic X-ray beam shows first-order diffraction maximum while the grazing angle is 7.8°. Compute the X-ray wavelength λ .
A girl rides the escalator that moves foward at a constant speed. As the girl raises, how do her gravitational energy and kinetic energy change.
A gas expands while 502 J of energy is added to it as heat. The expanding gas does 422 J of work on its surroundings.
You and the friend each drive 47.0 km. You travel at 87.0 km/h; your friend travels at 98 km/h. How long will your friend wait for you at the end of trip.
What is acceleration of an object sliding down to plane
An iguana that is slowing down at a uniform rate of acceleration while moving in positive direction.
Explain functionalism, conflict theory and interactionism
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