12/06/20

A particle is moving with velocity v(t) = t2 – 9t + 18 with distance, s measured in meters, left or right of zero, and t measured in seconds, with t between 0 and 8 seconds inclusive
A particle is moving with velocity v(t) = t2 – 9t + 18 with distance, s measured in meters, left or right of zero, and t measured in seconds, with t between 0 and 8 seconds inclusive. The position... more
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12/06/20

A hash function has the following properties?
3) Because public key cryptography is slow compared to symmetric key cryptography, it is often used to securely agree on a ______________public key    cipherprivate key   session keyNone... more
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12/06/20

Math question about circles and lines

CIRCLES AND LINES PRE CALCULUSI need help answering these two questions for a final exam. Please help 1.) Let A(1,3) and B(4,−2).  Find all points P on the y-axis such that AP⊥BP (that is ,∠APB=... more
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12/06/20

A 60.0 kg mass is located 1500 km above the surface of the Earth. The acceleration due to gravity on the Earth’s surface is g= 9.80 m/s2 and the radius of Earth is 6.37 x 106 m
(a)What is the mass of the 60.0 kg object at an altitude of 1500 km?(b)What is the acceleration due to gravity at an altitude of 1500 km?(c)What is the magnitude of the centripetal acceleration of... more
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12/06/20

Satellite A of mass m orbits a planet of mass M at a distance of R from the center of the planet. The speed of the satellite is v. Answer each of the following in terms of m, M, R and v.
(b) Satellite B of mass m has orbital radius R. Satellite B orbits a planet of mass 4 M. Whatis the speed of the satellite B?(c)Satellite B of mass m orbits a planet of mass M with speed 2 v. What... more
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12/05/20

if f(x) has a leading term of :
3x4 and zeros at x=2, x= -2, and x= -5, choose all possibly true statements: The sign of f(x) changes twice x-5 is a factor of f(x) x2 -4 is a factor of f(x) the constant term is 4 3- 2√10 is a... more
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12/04/20

How to find the local min and max of a piecewise function: do not understand

How did you find the local min and max of a piecewise function? {-x: x<-1 , 2-x^2, x> (or equal to) -1}
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12/04/20

Find the range of 'a' in the following equations by the number of real roots.
Greetings! Can anyone guide me on how to solve this type of questions? My teacher already gave the solutions for the questions but I can't understand them at all :/Here's the link to the questions... more
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12/04/20

Can someone help me solve this?
Plaskett's binary system consists of two stars that revolve in a circular orbit about a center of mass midway between them. This statement implies that the masses of the two stars are equal (see... more
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12/03/20

Ohmic Resistors are those who?
a) Are made of insulating materialsb) Have constant electrical resistancec) Present great electrical resistanced) Are able to withstand great electrical currentse) Are usually made of conductor... more
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12/02/20

The gravitational field on the surface of the sun is more than 270 N/kg. Could you lift a 1 kg weight on the Sun (assuming you could survive the tremendous heat there)?
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11/30/20

how much energy (in J) was made unavailable for useful work as a result?
An irreversible process takes place by which the entropy of the universe increases by 1.66 J/K. If the temperature of the environment in which the process occurred is 230 K, how much energy (in J)... more
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11/30/20

Find the value of the integral from 1 to 9 of x squared, dx using four rectangles of equal width, with each left end-point used to find the height of each rectangle.
Find the value of  using four rectangles of equal width, with each left end-point used to find the height of each rectangle. (2 points) A 2(1 + 9 + 25 + 49) B 2(9 + 25 + 49 + 81) C 0.5(1 + 9 +... more
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11/22/20

5. Given the function 𝑝(𝑥) = 𝑘 ∙ 𝑥^3 − 12𝑥^2 − 3750𝑥 + 180, where K=5
Find (a) all critical points(b) all extreme values(c) all inflection points (give an ordered pair) (d) identify a suitable interval that includes all these features, and (e) provide a graph on this... more
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11/21/20

What is the buoyant force exerted on it by the air?
An empty storage tank has a volume of 8,000 ft3. What is the buoyant force exerted on it by the air? (Assume the air is at 0°C and 1 atm.)
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11/21/20

Find the gauge pressure (in psi) at the bottom of a freshwater swimming pool that is 17.4 ft deep.
Find the gauge pressure (in psi) at the bottom of a freshwater swimming pool that is 17.4 ft deep.
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11/21/20

finding distance of block that is attached to a spring

A block of mass m = 2.5 kg is attached to a spring with spring constant k = 530 N/m. It is initially at rest on an inclined plane that is at an angle of θ = 27° with respect to the horizontal, and... more
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11/19/20

Need help in my physics class
A race car rounds a curve at 51 m/s. The radius of the curve is 441 m, and the car's mass is 670 kg. (Assume the car's speed remains constant. Take the radially inward direction to be positive.... more
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11/19/20

physics questionphys
A shotgun is fired horizontally at a target in a firing range. The bullet leaves the gun at 598 m/s. The gun is pointed directly at the center of the target, but the bullet strikes the target 0.032... more
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11/19/20

If h(x) represent a parabola whose turning point is at (-3,7) and the funtion f is defined by f(x)= -h(x+2), then what are the coordinates of the turning point of f? explain your reasoning

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11/18/20

precal question

Use a Double- or Half-Angle Formula to solve the equation in the interval [0, 2𝜋). (Enter your answers as a comma-separated list.)2 cos2(𝜃) = 2 − cos(2𝜃)𝜃 =   
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11/18/20

precal question

Use an Addition or Subtraction Formula to simplify the equation.sin(𝜃) cos(3𝜃) + cos(𝜃) sin(3𝜃) = 0𝜃 = Find all solutions in the interval [0, 2𝜋). (Enter your answers as a comma-separated list.)𝜃 = 
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11/17/20

How do you determine if your calculator gave you a legitimate answer when calculating the derivative of a function?
I was instructed to use my calculator to find the derivatives of the following functionsa) find f'(pi/25) for f(x)=sin(200x)b) find f'(pi/25) for f(x) = |sin(200x)|c) find f'(pi/25) for f(x) =... more
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11/16/20

Quadratic Functions
A transit company carries about 80 000 riders per day for a fare of $1.25. To obtain more revenue, the management plans to increase the fare. It ... more
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11/15/20

Probability Probelm: Can you please help me with this problem?
A poker hand consists of 5 cards from a standard deck of 52. Find the number of different poker hands of the specified type. two pairs (two of one denomination, two of another denomination, and one... more
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