09/26/23

How long after the blue ball is thrown are the two balls in the air at the same height?
A blue ball is thrown upward with an initial speed of 21.4 m/s, from a height of 0.7 meters above the ground. 2.6 seconds after the blue ball is thrown, a red ball is thrown down with an initial... more
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09/25/23

Indefinte integrals
My daughter is having problems with this one and it's way above me. Any help is appreciated.Consider the indefinite integral ((9x^3+8x^2+45x+54)/x^4+9x^2)dx then the integrand has partial... more
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09/23/23

The velocity of the first airplane is 740 m/h at a heading of 63.4 ◦ . The velocity of the second is 650 m/h at a heading of 184◦ . How far apart are they after 1.4 h? Answer in units of m.
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06/19/23

physics horizontal and vertical velocity question
An artillery shell is launched on a flat, horizontal field at an angle of α = 32.8° with respect to the horizontal and with an initial speed of v0 = 224 m/s. What is the horizontal velocity of the... more
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05/14/23

How can I do this?
672.The area of the triangle determined by the vectors v and w is 5. What is the area of the triangle determined by the vectors 2v and 3w? Justify your answer. Do not assume that v and w are... more
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05/13/23

Please help with this question
A boy throws a baseball onto a roof and it rolls back down and off the roof with a speed of 3.05 m/s. If the roof is pitched at 38.0° below the horizon and the roof edge is 4.50 m above the ground,... more
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05/09/23

A small object begins a free‑fall from a height of 25.0 m. After 1.30 s, a second small object is launched vertically upward from the ground with an initial velocity of 38.0 m/s. At what height ℎ abo
A small object begins a free‑fall from a height of 25.0 m. After 1.30 s, a second small object is launched vertically upward from the ground with an initial velocity of 38.0 m/s.At what... more
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05/04/23

What is the energy of the air resistance exerted on his parachute?
A parachuter jumped from the top of a building 850 m high with a velocity of 5 m/s. He landed with a velocity pf 2 m/s.
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05/03/23

For what values of t and s does the equality ⟨−(3𝑡+3),4𝑠−6𝑡⟩=⟨3𝑠+5𝑡,2𝑡−1⟩hold true? s= ? t=? At these values, the resulting vector is____?
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05/03/23

You are feeling bored and decide to take a walk. You walk 49.4 m at a direction 30 degrees N of W and then 30 m east
What is the magnitude of the vector that describes your position with respect to your starting point. (If the first part of your trip is vector A and the second part is vector B, you are looking... more
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05/02/23

Conservation Question (Look at description for more details; PHYSICS Related)
A large container of water is open to the air and develops a hole with area 10 cm2 (.001 m2) at a point h below the surface of the water. If the water leaves the hole with a flow rate of 0.0033... more
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04/30/23

Please help with this Calculus problem
Consider the vector field F= (7x+4y,4x+5)Is this vector field conservative? if so: Find a function f so that F=∇f f(x,y) = _____ + K
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04/24/23

A train travels along a track and its speed (mph) is given s(t)=29t for the first half hour. Its speed is constant and equal to s(t)=29/2 after the first half hour. t is in hours.

How far (miles) does the train travel in the first hour?
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04/24/23

In triangle ABC, a = 5.4 m, b = 7.2 m and c = 10.0 m. Determine the angle of A to the nearest degree.
Please show full steps. Thank you.
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04/23/23

Rotational Motion Physics - Please help on all parts!
The figure shows a solid, uniform cylinder of mass 7.00kg and radius 0.450 m with a light string wrapped around it. A 3.00-N tension force is applied as shown to the string, causing the cylinder to... more
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04/23/23

Physics question
A 5.93 kg block is placed at the top of a frictionless inclined plane angled at 22.4 degrees relative to the horizontal. When released (from rest), the block slides down the full 4.99 meter length... more
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04/23/23

Find the difference between 2 unit vectors. The angle between them is 90 right? So 1+1-2cos90 should be 2 and thus the answer should be root 2, why do we find the angle to be 60 and then solve the Q?
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04/20/23

If a data set has a mean of 90, and a standard deviation of 15, what is a number that is more than 2 standard deviations beneath the mean?
If a data set has a mean of 90, and a standard deviation of 15, what is a number that is more than 2 standard deviations beneath the mean?
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04/14/23

Speed and Velocity
Assume the Earth moves in a perfectly circular orbit around the sun, The earth's orbital speed around the sun is known to be 30 km/s. Light travels at the speed of 3 x 108 m/s in free space.... more
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04/11/23

What on earth is this question?
You have a 0.3 F capacitor connected in series to a 17 Ω resistor and a 6 V source. What is the voltage on the capacitor after 1 seconds?
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04/11/23

How can I do this using vectors or parametric equations?
580.Let A = (4,0,0), B = (0,3,0), and C = (0,0,5). (a) Draw a diagram, then find coordinates for the point closest to C on segment AB. (b) Find the area of triangle ABC. (c) Find the length of the... more
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04/09/23

The Solution of the Quadratic Equation By Differentiation Method

Find the roots of the quadratic equation by differentiation method. https://papers.ssrn.com/sol3/papers.cfm?abstract_id=4384377#:~:text=https%3A//dx.doi.org/10.2139/ssrn.4384377
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04/08/23

Force due to magnetic field from two perpendicular wires
Two wires, 1 and 2, are carrying currents I1 and I2. They are perpendicular to each other and separated by distance d.What is the force exerted on a segment of wire 2 of length L from the point... more
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04/05/23

Magnitude of Acceleration
How would I calculate magnitude of acceleration given the following?Object falling from height 2m above ground.Stops gradually during its fall over a height of 10cm.Gravity = 9.80 ms-2
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04/04/23

What is the domain and range for the function below
y = 6x2 + 3x +1
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