08/30/23

Capacitors in series
A 2μF and a 4μF capacitor are connected in series. A voltage of 1 kV is applied to the series capacitors. After charging, the voltage source is disconnected, and the capacitors are connected to... more
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07/24/23

Determine the number of distinguishable different words that can be formed by rearranging the letters for the following word? ALGEBRA
a. 630b. 2520c. 5040d. 1260
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07/21/23

energy and society
State whether each of the following statements describes alpha particles, beta particles, or gamma radiation: (6 marks)a) The largest of the three.b) The most penetrating of the three.c) Of the... more
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07/20/23

How Big Is A Light Year?
Some say it is 100 million marathons! Others say it is 100 billion marathons across!
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07/18/23

mod question in discrete math
mod problem,for any positive integer mm - 1 mod mCould I say it congruence to m - (m - 1) mod m in next line?Below is from a real exam, I was rushing to it, so the explanation might not very... more
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07/17/23

forces physics unit
Kara (55 kg) is standing next to her brother Ben (80 kg) on a large piece of frictionless ice. Being a bit of a joker, Kara decides to push her brother with a force of 200 N expecting him to slide... more
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07/07/23

An alpha particle (4He) undergoes an elastic collision with a stationary uranium nucleus (235U). What % of the kinetic E of the alpha particle is transferred to the uranium nucleus? collision is 1D
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06/26/23

Find U1 and U2, What kind of collision occurred?
A body of mass 100g with a velocity of 10 cm/ sec hits another identical body at rest. and the two bodies recoiled as the second body moved 30* above the horizontal and the first body moved 30*... more
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06/15/23

If a cyclist is riding around a curve at constant speed, is he accelerating? If so, what is the direction of his acceleration?
A. Yes, he is accelerating in the direction opposite of his motionB. Yes, he is accelerating in the direction of his motionC. Yes, he is accelerating towards the outside of the curveD. Yes, he is... more
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06/14/23

physics question
Suppose a car is driving along a street with a velocity of of 54.0 mi/h. The street is horizontal and is not banked.(a) If the coefficient of static friction between street and tires on a rainy day... more
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06/11/23

PLease Help with this question
VSuppose that the height of the incline is h = 15.2 m. Find the speed at the bottom for each of the following objects. solid sphere       I know this answer spherical shell      My original... more
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06/08/23

buoyancy, Buoyant Force

At a party, 3 engineers (MP = 70 kg each) ponder whether a Jacuzzi with a capacity of 1500x1500x500 mm3 (length L x width W x height H) and a dead weight of MJ = 250 kg is sufficient to power a... more
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05/30/23

Physics Speed Question
1.10 kg solid, ball of radius 0.140 m is released from rest at point A, its center of gravity a distance of 1.70 m above the ground. The ball rolls w/o slipping to the bottom of an incline and back... more
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05/16/23

An object weighing 400 N is hanging from two ropes that make angles of 40° and 50° with the ceiling. Calculate the tension (magnitude only) in the two ropes.
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05/11/23

scale property of multi-variable functions
Match the multi-variable functions on the left with the scale propertyQ(K,L)=2K0.5L1Q(K,L)=7K0.9L0.1Q(K,L)=5K0.2L0.6Increasing returns to scaleConstant returns to scaleDecreasing returns to scale
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05/08/23

Question from Linear Kinetics
 A snowboarder takes speed downhill in order to get up a hill with an 8% incline without pushing. The kinetic friction coefficient between snowboard and snow = 0.10 and air resistance can be... more
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05/06/23

A neutron in a nuclear reactor makes an elastic, head-on collision with the nucleus of a carbon atom initially at rest.
A neutron in a nuclear reactor makes an elastic, head-on collision with the nucleus of a carbon atom initially at rest.(a) What fraction of the neutron's kinetic energy is transferred to the carbon... more
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05/05/23

roasted turkey cooling
This exercise uses Newton's Law of Cooling.A roasted turkey is taken from an oven when its temperature has reached 185°F and is placed on a table in a room where the temperature is 75°F.(a) If the... more
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05/05/23

solve: - cos 2x + cos x + cos 5x = 0
I tried to use trig identities, first the double angle formula to subside -cos 2x -2 cos^2 - 1 + cos x + cos 5x = 0 however I am lost on what to do next, should I have done something different? any... more
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04/25/23

Static Equilibrium Question; Please Help.

A person is standing on a diving board that is supported by two springs, one at each end. The diving board weighs 200 N and is 2.0 m long. What is the force exerted by each spring when a 500-N... more
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04/19/23

Math Homework help needed

A rectangular swimming pool 50 ft long, 20 ft wide, and 16 ft deep is filled with water to a depth of 15 ft. Use an integral to find the work required to pump all the water out over the top. (Take... more
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04/12/23

A 0.366 kg metal cylinder is placed inside the top of a plastic tube, the lower end of which is sealed off by an adjustable plunger. The cylinder comes to rest some distance above the plunger
A 0.366 kg metal cylinder is placed inside the top of a plastic tube, the lower end of which is sealed off by an adjustable plunger. The cylinder comes to rest some distance above the plunger. The... more
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04/11/23

Graphs of the Sine and Cosine Functions
A ferris wheel is 35 meters in diameter and boarded from a platform that is 3 meters above the ground. The six o'clock position on the ferris wheel is level with the loading platform. The wheel... more
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04/10/23

A uniform disk with a radius of 0.8 m and mass of 58.3 kg rotates at 5.4 rad/s. What is the rotational kinetic energy of the disk?
Please send an answer and explanation ASAP I'm overcomplicating this question.
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04/05/23

Determine the members forces.
Please help me solve
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