05/04/22

Physics Question#2
TV broadcast antennas are the tallest artificial structures on Earth. In 1987, a 70-kg physicist placed himself and 344 kg of equipment at the top of a 647-m-high antenna to perform gravity... more
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05/04/22

torque in physics
You have a horizontal grindstone (a disk) that is 93 kg, has a 0.33 m radius, is turning at 86 rpm (in the positive direction), and you press a steel axe against the edge with a force of 21 N in... more
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05/03/22

Explain for each of the following cases, whether or not you are likely to be able to see your own reflection in a window
Window glass may be better at transmitting light than reflecting it, but there are certain circumstances where it is very clear that some light is reflected. Explain for each of the following... more
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04/29/22

A pipe 50 cm long us open at both ends. What is the wavelength of a) The longest allowed standing wave in the pipe? b) Thenext-longestallowedstandingwave?
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04/29/22

Physics question
A bomb initially at rest on a smooth, horizontal surface is exploded into three pieces. Two pieces fly off horizontally at 55.4angle to each other, a 2.50 kg piece at 22.0 m/s and a 3.20 kg piece... more
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04/29/22

Physics energy question
An electric motor, rated at 45.0 kW with an efficiency of 0.79, provides power while lifting a 1200 kg elevator. The motor can lift eight passengers (at constant speed) to a height of 35.0 m in... more
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04/29/22

determine the rotation rate, in revolutions per second, required to give the astronaut a centripetal acceleration of 19.0g
the 20-g centrifuge at nasa's ames research center in mountain view, california, is a horizontal, cylindrical tube 58 ft long and is represented in the figure below. assume an astronaut in training... more
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04/29/22

A region bounded
Region R is bounded by  and the x-axis over the interval [–1, 1]. A solid has base R, and cross sections perpendicular to the x-axis are right isosceles triangles with one leg located in the base.... more
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04/29/22

Find the values of x on the curve y = cos(x) / 2 + sin(x) at which the tangent is horizontal.
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04/28/22

the function f is not differentiable at x=5 which of the following must be true
the function f is not differentiable at x=5 which of the following must be truef is not continuous at x=5limit as x approaches 5 f(x) does not existlim as x approaches 5 (f(x)-f(5))/(x-5) does not... more
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04/27/22

HOW CAN THIS ERROR BE FIXED?
inlab21.cpp: In member function ‘DataType Queue::dequeue()’:inlab21.cpp:28:2: error: ‘temp’ was not declared in this scope temp=frontPtr================================// This is the default... more
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04/27/22

i got an error saying this.
main21.cpp: In function ‘int main()’:main21.cpp:49:26: error: ‘maxlength’ was not declared in this scope if(qLength>maxLength) maxlength = qLength;... more
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04/27/22

Cyli‎ndrical Co‎ordinates.
L‎et G2 is the so‎lid bel‎ow the para‎boloid z = 8 − x2 − y2 , ab‎ove th‎e paraboloid z = x2 + y2 and outs‎ide the cylind‎er x2 + y2= 1. Evaluate‎ ∫∫∫G2 1 /√(x2 + y2) dV usi‎ng cyli‎ndrical... more
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04/27/22

Given that f(x, y)...
Given that f(x, y) = { (xy) / (x2 + y2) if (x, y) ≠ (0, 0) 0 if (x, y) = (0, 0)Is f(x, y) continuous at (0, 0)? Explain.
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04/26/22

Decide whether or not the given integral converges
Note: You may need to assume the fact that lim M→+ ∞ Mne−M = 0 for all n.Decide whether or not the given integral converges-4∫1/x^2dx-∞(a)Is the integral a convergent or divergent?(b)If the... more
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04/26/22

Relativity......
If you can't determine if an object is in motion due to the theory of relativity, why can't you just measure the mass, if mass increases with speed and tell if it is moving?
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04/26/22

The weight of a falling object the moment it hits the ground.

How do I measure the weight of a falling object the moment it hits the ground? For example, a 15kg ball is suspended 100 meters in the air and then dropped.
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04/25/22

circular motion
Suppose a piece of dust is stuck to a CD such that it does not slip even when the CD is spinning.a) if the constant spin rate of the CD is 460rpm, then what is the angular distance in radians, is... more
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04/24/22

Linear velocity problem
The diameter of the back wheel of a tricycle is 1.5 times longer than the front wheel's diameter. When the tricycle is moving, the surface points of the back wheel move with the linear velocity of... more
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04/24/22

The bus is going with an acceleration of 2 m/s^2. What is the time frame during which the velocity of the bus increases by 72 km/h
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04/24/22

Polar Coordinates
A curve in polar coordinates is given by: r=8+5costheta. Point P is at theta = 21pi/16. a) Find the coordinate r for P, with r>0 and pi <theta < 3pi/2.b) Find the cartesian point for P.... more
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04/23/22

integral test on a series of numbers.
Prove that you can use the integral test on the series which is the sum from n=1 to infinity of theterms an= ln(n)/n. Then use the test to establish the convergence or divergence of the... more
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04/23/22

Dete‎rmine if f (x, y) is‎ co‎ntinuous at (0,‎ 0)
Dete‎rmine if f (x, y) =={ (xsi‎n3y)/(x‎2+y6), (x, ‎y) ≠ (0, ‎0)={ 1, (x, y) = (0, 0)is‎ co‎ntinuous at (0,‎ 0)
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04/22/22

An object moves along a coordinate line with velocity v(t) = t(6 − t) m/s. Its initial position is 2 units to the left of the origin.
(a) Find the position of the object 16 seconds later. (b) Find the total distance traveled by the object during the first 16 seconds.
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04/22/22

How do you use limit approach to identify all asymptotes of the function f(x)=(1/x)+ln(x)?
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