12/15/21

Physics I need help
object A and object B are equal distances on opposite sides of object C. Object B has three times the mass of object C. Objects A and B have equal mass. What is the ratio of the gravitational force... more
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12/15/21

Physics please help me

Newton’s cradle is a contraption where metal balls hang from a frame. When one ball is pulled and released, the collision causes one ball on the opposite end to be released. Which type of force can... more
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12/14/21

If m1 = 7.50 kg is located at x1 = -8.90 m and m2 = 11.0 kg is located at x2 = 9.9 m, then
If m1 = 7.50 kg is located at x1 = -8.90 m and m2 = 11.0 kg is located at x2 = 9.9 m, thenA. Where on the x-axis is this system's center of mass? XCM =  m B. How far is each mass from the center of... more
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12/14/21

Fraction of the fish’s total volume.
Suppose a fish has an average density of 1030 kg/m3, compared to the density of the surrounding water, 1000 k/m3. One way the fish can keep from slowly sinking is by using an air bladder (the... more
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12/14/21

A 5kg object...
A 5kg object is hanging by a 1.5m wire when it is suddenly hit by a 3kg missile traveling horizontally at 12m/s. The missile embeds itself in the object during the collision. What is the tension in... more
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12/14/21

Physics question pls help
1) A temporary structure loses 60 kWh of energy each day. If modifications to the structure are made so that the energy flux decreases by a factor of 2, what will the new energy loss per day be?a)... more
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12/12/21

Pre Calculus Question

Milk is poured into a glass when it is 33ºF, and it warms to 38ºF in a room that is 75ºF in 10 minutes. What is the temperature after 30 min? 60 min? How long before the milk warms to 60ºF?Show the... more
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12/12/21

What are the steps to get the answer?
Use Mathematical Induction to prove the sum of Arithmetic Sequences:n∑j=1(a+(j−1)d)=n2(2a+(n−1)d)Hint: First write down what P(1) says and then prove it. Then write down what P(k+1) says and prove... more
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12/12/21

Given f(x)=3x^2 +1 find: f(x+h)-f(x)/h
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12/12/21

A thief is driving a motorcycle at 36 km/h on a straight road.

A thief is driving a motorcycle at 36 km/h on a straight road. He crosses a point where a police car is waiting. The moment when the thief crosses the police car, the police car starts from rest... more
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12/12/21

If you do the pendulum experiment on a planet with a larger gravity than Earths gravity what would the graph look like?
I know a graph for the length of the pendulum vs the period squared on Earth would be a positive slope . I also know that doing this on another planet with a higher gravity than Earth , the graph... more
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12/11/21

Is there somebody that could help me with this problem please? Thanks in advance!
You are given a rectangular piece of paper that has length x=13.8 cm and height y= 12 cm. The lower right corner is to be folded to the top edge forming a triangle. Determine the maximum and... more
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12/10/21

How to arrange t^2 = 4pi^2 L/g in y=mx format?
How do I derive formula to make L = y , t^2 = x and 4pi^2 L/g = m ? A detailed answer would be very appreciated please and thank you ! :)
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12/09/21

Find the work done by the force F = 9i − 7j in moving an object from the point (3, 7) to the point (4, −15).
Find the work done by the force F = 9i − 7j in moving an object from the point (3, 7) to the point (4, −15).
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12/08/21

Check whether the number is divisible by the multipliers of two and the rest of integers, java multithreading
I am trying to find the largest factor of a number (except than itself) by using multipleThreads in JAVA. the template for the code is ready but I don't know what to put in the missing methods. the... more
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12/07/21

final velocity to initial velocity ratio
A particle of mass m, moving with velocity vi has kinetic energy equal to Ki. If work W = 8Ki is done on the particle, the ratio of the final velocity of the particle to the initial velocity of the... more
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12/07/21

Acceleration given friction forces
A worker pushes a heavy (100-kg) crate that is resting on a thick pile carpet. The coefficients of static and kinetic friction are 0.6 and 0.4, respectively. The worker pushes with a horizontal... more
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12/07/21

I need help i dont understand! and expkanabtion needed

Objects or substances that absorb any wavelength of electromagnetic radiation become warmer anda. Produce a gas b. convert the absorbed energy to infrared radiation. c. Convert the absorbed energy... more
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12/07/21

Physics dynamics problem
The Russell traction apparatus is used for a fractured femur. When the femur is healing, the muscles of the upper leg tend to pull the two sections of the femur together, which could result in a... more
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12/07/21

List all the possible rational solutions of 3x^4-2x^3+11x-1=0.
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12/07/21

Need help solving this math homework question
The number of gallons I=F(A) needed to paint a house is a function of its surface area.A. Explain the meaning of each function 2F(A) F(A+2) F(A)+2
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12/06/21

amusement park booth gambling wheel with 1-35, finding angular speed

A certain amusement park booth has a gambling wheel that can rotate on a fixed axis. The wheel has a radius of r = 30 cm and contains the numbers 1 through 35 evenly spaced around its edge in... more
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12/06/21

Rachel is at window from11th floor of building, bucket passes by. notes it hits ground 1.5s later. What's the height from bucket was dropped- each floor 5m high, window in middle of the 11th floor.
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12/05/21

disk with inertia, finding angular velocity final with two disks

A disk of moment of inertial 625 kg m2 is rotating in a horizontal plane about an axis through its center with an angular speed of 13.0 rad/s. If a second, identical, but not rotating disk, is... more
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12/05/21

Differential Equation. How can I get the values of L and C? I don´t know how to
consider an LC system with a source of potential difference E(t) = E0cos(ωt)The equation for the voltage V = Vc across the capacitor isLC (d2V ⁄ dt2 )+ V = E0cos(ωt)Given the frequency ω, find the... more
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