04/03/21

#### 𝑥2+𝑦2−12𝑥+12𝑦+68=0 x 2 + y 2 − 12 x + 12 y + 68 = 0 is the equation of a circle with center (ℎ,𝑘) ( h , k ) and radius 𝑟 r for: h= and k= and r =

05/30/20

A charged capacitor is being discharged through a resistor. At the end of one time constantthe charge has been reduced by (1 – 1/e) = 63% of its initial value. At the end of two timeconstants the... more

05/13/20

05/12/20

#### I need help with a trig problem

tan^3(2x-pi/6)+sec^2(2x-pi/6)-3tan(2x-pi/6)-4=0

05/12/20

#### evaluate the limit

evaluate lim x→-∞ x^2+2x/x-3x^2

05/05/20

#### Exponential Models

The population of a certain city was 120,000 in 2014, and the observed doubling time for the population is 19 years. a) Find an exponential model n(t) = n02^t/a for the population t years after... more

05/02/20

04/14/20

#### Calculate the width of the central maximum for the 0.04 mm slit assuming all other dimensions remain the same.

Assume that you had used an argon laser (wavelength = 488 nm) instead of the HeNe laser. Calculate the width of the central maximum for the 0.04 mm slit assuming all other dimensions remain the same.

04/14/20

#### Rectangular Form

Change 2cis30° to exact rectangular form.

04/14/20

#### More Math Problems

Use appropriate sum or difference identities to find the exact value. cos 15°

04/04/20

#### How much force is the seat exerting on the person?

A 59.8kg person is riding on a Ferris wheel that has a radius of 16.3m. When passing through the bottom of the Ferris wheel the person is moving at 8.2 m/s. How much force is the seat exerting on... more

04/02/20

#### How much force do the students need to exert (combined) if they want to give the car a forward acceleration of 0.5 m/s2

Two students are pushing a stalled car down the street. The car has a mass of 1500 kg and experiences a friction force between the tires and the road of 350 N. How much force do the students need... more

04/01/20

#### Newton’s third law and conservation of momentum

When a bird flies, it’s wings push air downward. As a result the air pushed back upward on the bird, which law of motion most applies to the way the wings of a bird beat?

03/31/20

#### Find the differential dy of the given function. (Use "dx" for dx.)

y=x+1/4x-9I got -13/(4x-9)^2 but it got marked wrong. Help?

03/31/20

#### Physics question-confused

A 120 kg mass is blown apart into a 80 kg piece and a 40 kg piece. After the blast, the two masses are moving apart with a relative velocity of 60 m/s. The velocity of the 80 kg mass is?Hint:... more

03/30/20

03/21/20

#### Calculus Question

Find the absolute maximum and absolute minimum values of f on the given interval.f(x) = 6x3 − 18x2 − 54x + 9,    [−2, 4]

02/14/20

#### Physical Science Questions

A thick wire will have ____ resistance than a thin wire of the same material.(A) open(B) marginal(C) greater(D) less (E) none of the above 2. The thin wire in the previous question will... more

01/31/20

#### Find the volume of the solid obtained by rotating the region bounded by the given curves about the specifed line.

Find the volume of the solid obtained by rotating the regionbounded by the given curves about the specifed line. Sketch theregion, the solid, and a typical disk or washer. x=2sqrt(y), x= 0, y= 9;... more

01/28/20

#### Constant velocity and acceleration

A family road trip starts out in a van traveling 50km at a velocity of 75km/hr followed by a spot of a slow traffic where they travel 10km at a velocity of 25km/hr. What is the average velocity... more

01/27/20

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