11/12/21

Given that t + u = (1,1), where t = (m,3), u = (2,n) and m and n are constants, find the values of m and n
it is a vector chapter and t+u = (1,1) as column vector , t = (m,3) as column vector and u = (2,n) column vector
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11/11/21

Topic: Oscillations
Consider a simple pendulum of mass 0.703 kg and length 213 cm. If the pendulum is released from rest at an angle of 17.5°, what is the tangential velocity of the mass at t = 4.43 seconds?
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11/10/21

Find the maximum area of a triangle formed in the first quadrant by the 𝑥-axis, 𝑦-axis and a tangent line to the graph of 𝑓=(𝑥+6)^−2
I would appreciate some assistance on this question
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11/09/21

Related Rates Calculus Question:
A rope, attached to a weight, goes up through a pulley at the ceiling and back down to a worker. The worker holds the rope at the same height as the connection point between the rope and weight.The... more
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11/08/21

How to do that?
The parametric equations for the motion of a charged particle released from rest in electric and magnetic fields at right angles to each other take the forms x=a(θ−sinθ),y=a(1−cosθ). Show that the... more
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11/08/21

Related Rates calculus

A police car is parked 30 feet due north of a stop sign on a street road a red car is traveling towards the stop sign from 150 feet due east on the road the police radar read that the distance... more
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11/08/21

How to solve this?
Find the equations of tangents for the implicit function x3y+cos(x2y)=x2 at the points on the curve where y=0.
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11/07/21

The diagram shows a mass, m = 6.70kg, at rest against a spring of force constant k = 1560 N/m,
The diagram shows a mass, m = 6.70kg, at rest against a spring of force constant k = 1560 N/m, and compressed a distance Δx = 0.200m. When released, the mass will slide on a horizontal, rough... more
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11/07/21

A baseball is moving in the air along the customary parabola. Ignoring air drag, where is the force on the baseball zero?
A baseball is moving in the air along the customary parabola. Ignoring air drag, where is the force on the baseball zero?Select one:a. nowhereb. at the top of the parabolac. where it is about to... more
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11/07/21

How many of the surveyed adults watched the following?
In a survey, 676 adults were asked what television programs they had recently watched. The following information was obtained: 222 watched neither the Big Game nor the New Movie, and 285 watched... more
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11/06/21

What is the shortest distance from the surface to origin
What is the shortest distance from the surface xy+15x+z^2 to the origin?
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11/04/21

A computer to be used in a satellite

A computer to be used in a satellite must be able to withstand accelerations of up to 25 times the acceleration due to gravity. In a test to see whether it meets this specification, the computer is... more
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11/03/21

Does anyone know the answer????
The terminal velocity of a 3×10^−5 kg raindrop is about 9 m/s . Assume a drag force FD=−bv.a) Determine the value of the constant b. Express your answer using one significant figure.b= _____... more
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11/03/21

Dynamics Fluids
In an old house, a loose window rattles whenever there's a wind blowing outside the house. If the air inside the house is still and at a pressure 100900 Pa, what is the pressure outside the house... more
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11/02/21

Do you think the center of mass of irregular object is also its geometric center? Explain
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10/30/21

Find vertical position and exit angle of electron.
Electrons move initially at 2.4 x 10^6 m/s horizontally. They penetrate a region between two 2 cm long plates and have an acceleration of 4 x 10^14 m/s^2 vertically and directed upwards. Determine... more
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10/29/21

Three children are riding on the edge of a merry–go–round that is
Three children are riding on the edge of a merry–go–round that is 90 kg, has a 1.80–m radius, and is spinning at 22.0 rpm. The children have masses of 17.0, 21.0, and 25.0 kg. If the child who has... more
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10/29/21

speed at the bottom of the hill
Sledge goes down a hill that is at 12° degree angle and it is 25 meters long. The starting speed is 0 and there is no friction or air resistance. What is the speed at the bottom of the hill?
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10/28/21

Calculate the equivalent resistance

The figure shows a resistor network consisting of four resistors. R1 = 480 ohms, R2 = 130 ohms, R3 = 520 ohms, and R4 = 216 ohms. Calculate the equivalent resistance that would replace the resistor... more
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10/28/21

Consider the sequence given by an = − n / 2n+1 for n ≥ 0 Determine the limit

Let L be the limit you found above. Find the minimal index N so that for n ≥ N, we have | an − L | < 0.008.
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10/27/21

Consider the function f(x)={x^5+0.4 x is less than or equal to 0 and -x+0.4 x>0. Use the value of f’(0) to guide you classify the point (0,0.4). Select all that apply.

a) relative minimum b) absolute maximum c) absolute minimum d) relative maximum e) none of these
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10/25/21

A 0.145-kg baseball pitched horizontally at 31.5 m/s strikes a bat and is popped straight up to a height of 59.0 m .
A 0.145-kgkg baseball pitched horizontally at 31.5 m/sm/s strikes a bat and is popped straight up to a height of 59.0 mm .If the contact time is 1.80 msms , calculate the magnitude of the average... more
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10/25/21

An internal explosion breaks an object, initially at rest, into two pieces, one of which has 1.6 times the mass of the other.
An internal explosion breaks an object, initially at rest, into two pieces, one of which has 1.6 times the mass of the other.If 6300 JJ were released in the explosion, how much kinetic energy did... more
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10/25/21

A 23-g bullet traveling 260 m/s penetrates a 5.0 kg block of wood and emerges cleanly at 215 m/s
A 23-gg bullet traveling 260 m/sm/s penetrates a 5.0 kgkg block of wood and emerges cleanly at 215 m/s If the block is stationary on a frictionless surface when hit, how fast does it move after the... more
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10/25/21

Explain your answers in the following.
(a) Show that the minimum of x+y+z subject to xyz = 1,x ≥ 0,y ≥ 0,z ≥ 0is3. Be sure to show why the minimum exists. Suggestion: Use the gradients to find the critical point, on the constraint... more
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