06/09/21

university phy1
Two men decide to use their cars to pull a truck stuck in mud. They attach ropes and one pulls with a force of 712 N at an angle of 32◦ with respect to the direction in which the truck is headed,... more
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06/09/21

Outside tempature
Outside temperature over a day can be modeled as a sinusoidal function. Suppose you know the high temperature for the day is 68 degrees and the low temperature of 32 degrees occurs at 5 AM.... more
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06/09/21

Angular kinetics
A man with a mass of 80 kg runs with a velocity of 3 m/s along a line tangent to a circular platform (m = 160 kg, radius r= 5 m). The platform is initially at rest and it has a moment of inertia... more
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06/09/21

Angular kinetic
A wheel with a moment of inertia of 0.03 kg.m2 is accelerated from rest to 20 rad/s in 5 seconds due to application of a moment of force (torque). When the moment of force is released, the wheel... more
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06/08/21

Speed and Distance relative to still air
You are flying a plane from Windsor to Gatio (N65E). The wind is coming from N20W at 60 km/h. What should your speed relative to the still air and heading be if you are to make the 500km trip in 1h... more
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06/06/21

Calculas H/w Help
A cylinder is inscribed in a right circular cone of height 7.75 inches and radius (at the base) equal to 5.25 inches. What are the dimensions of such a cylinder which has maximum volume?
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06/06/21

find the force of one end of the tank in newtons
A tank full of water is designed with ends in the shape of an isosceles triangle with height 13 meters and width, at the top, of 14 meters. Find the hydrostatic force in NEWTONS on one end of the... more
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06/06/21

find the force of newtons
A dam on a river is built so that the wall facing the water is shaped like the region above the curve y=0.8x4 and below the line y=280. (Here, distances are measured in meters.) The water level... more
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06/04/21

A 620 kg satellite above the earth's surface experiences a gravitational field strength of 4.5 N/kg.

Knowing the gravitational field strength at Earth’s sur-face and Earth’s radius, how far above Earth’s surfaceis the satellite? (Use ratio and proportion.)I'm using this gs=GMs/Rs^2 ... more
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06/04/21

find the hydrostatic force
A tank full of water is designed with ends in the shape of an isosceles triangle with height 13 meters and width, at the top, of 14 meters. Find the hydrostatic force on one end of the tank in... more
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06/04/21

A 110 cm long pipe is closed at one end. What is the fundamental frequency of the pipe? The speed of sound in air is 340 m/s.
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06/04/21

A fire truck is approaching a stationary observer at 40 m/s. If the frequency of the fire truck siren is 1500 Hz, what frequency will the observer hear? The speed of sound is 340 m/s.
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06/04/21

2 NH3 + 3 CuO g 3 Cu + N2 + 3 H2O
In the above equation how many grams of N2 can be made when 195 grams of CuO are consumed?Round your answer to the nearest tenth. If you answer is a whole number like 4, report the answer as 4.0Use... more
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06/03/21

Wave crests are passing the anchor chain of an anchored boat every 5 seconds. If the wave troughs are 15 m apart, what is the speed of the waves?
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06/03/21

Which of the following statements is false?

A wave carries energy from one place to another. A wave does not result in the bulk flow of the material of the medium. A wave is a traveling disturbance. A transverse wave is one in which... more
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06/02/21

equilibrium and velocity
A man walks westward on a boat with speed of 4.0 km/h, the ship's propeller drives it 15 km/h, NW; tide and wind drive the ship 5.0 km/h, S. What is the actual speed of the man relative to the... more
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06/02/21

Find the kinetic energy of the bar
A 50 cm long metal bar with mass 25 grams is attached to a pivot with a massless string 80 cm long. Find the kinetic energy of the bar when it is rotated at a rate of 4 revolutions per second.
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06/01/21

A spring is attached to the ceiling and pulled 16 cm down from equilibrium and released. After 4 seconds
A spring is attached to the ceiling and pulled 16 cm down from equilibrium and released. After 4 seconds the amplitude has decreased to 7 cm. The spring oscillates 6 times each second. Assume that... more
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06/01/21

Rates of Change

Milk is poured into a bowl at a constant rate of 15.0 cm3/s. The bowl has a circular cross section, but does not have a uniform diameter. (That is, different horizontal cross sections taken at... more
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06/01/21

Period and Frequency of The Pendulum
I. QUESTIONWhat does the period of a pendulum depend on? What does the period of a pendulum not depend on? Mass? Length? Amplitude?What is the relationship between the period and Mass? Length?... more
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05/30/21

please answer ASAP ... magnetism college-level physics
A negatively-charged particle travels parallel to magnetic field lines within a region of space. Which one of the following statements concerning the force exerted on the particle is true? The... more
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05/30/21

please help ASAP magnetism physics

A charged particle is moving through a constant magnetic field. Does the magnetic field do work on the charged particle? no, because the magnetic force is always perpendicular to the velocity of... more
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05/30/21

The mass of an object is Adding of heat will raise the temperature of the object by What is the specific heat of the object? 1400 J/kg ∙ K 3,500,000 J/kg ∙ K 0.00180 J/kg ∙ K 5.60 J/kg ∙ K
The mass of an object is  Adding  of heat will raise the temperature of the object by  What is the specific heat of the object? 1400 J/kg ∙ K 3,500,000 J/kg ∙ K 0.00180 J/kg ∙ K 5.60... more
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05/29/21

Angular Kinetics 6
A man with a mass of 80 kg runs with a velocity of 3 m/s along a line tangent to a circular platform (m = 160 kg, radius r= 5 m). The platform is initially at rest and it has a moment of inertia... more
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05/29/21

Angular Kinetics 3
A wheel with a moment of inertia of 0.03 kg.m2 is accelerated from rest to 20 rad/s in 5 seconds due to application of a moment of force (torque). When the moment of force is released, the wheel... more
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