11/05/23

PHYSICS HW problem-speed (please help, I am lost)
A firecracker in a coconut blows the coconut into three pieces. Two pieces of equal mass fly off south and west, perpendicular to each other, at 16 m/s. The third piece has twice the mass as the... more
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11/05/23

pleaseee help!!. Calculus!!!...

A large sphere of material is placed in a dissolving liquid.(a) When the radius is 1 m, it is observed to be changing at 7 cm/hour. At that instant, what is the rate at which the sphere's volume is... more
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11/03/23

I need help with this, the topic is tripple integrals

Find the volume of the solid that lies within the sphere x^2+y^2+z^2=49 above the xy plane and outside the cone z= 3sqrt(x^2+y^2)
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11/03/23

If he does this 29 times, how much work has he done? Answer in units of J.
A cheerleader lifts his 36.7 kg partner straight up off the ground a distance of 0.698 m before releasing her. Assume the partner’s velocity is zero at the beginning and the end of the lift. The... more
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11/03/23

Pls help, sorry for the trouble

Link to image of the problem
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11/03/23

the two polar cruves r=1 and r=theta^1/2. Find the area between 0 and their first intersection point
when graphed the root theta is a loop like a lolipop and the 1 is just a circle. What is the area between. I would set the integral bounds from 0 to the first intersection point, but that... more
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11/01/23

Solve This Physics Problem
A ball of mass 197 g is thrown with an initial velocity of 25 m/s at an angle of 30° with the horizontal direction. Ignore air resistance. What is the momentum of the ball after 0.5 s? (Do this... more
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10/30/23

Linear approximation

Use linear approximation, i.e the tangent line, to approximate cube root 8.02 as follows. Let f(x)=cube root x and find the equation of the tangent line to f(x) at x=8 in the form y=mx+b.m =b=using... more
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10/30/23

Change in Kenetic Energy

A mover pushes a 260 kg piano on wheels up a ramp 7 meters long onto a stage 1.75 meters above the ground. The mover pushes the piano with a force of 680 N and the coefficient of friction is... more
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10/24/23

How far will the car skid with locked brakes at 112.5 km/h? Assume that energy loss is due only to sliding friction. Answer in units of m.
This question is typical on some driver’s license exams: A car moving at 45 km/h skids 12 m with locked brakes. How far will the car skid with locked brakes at 112.5 km/h? Assume that energy loss... more
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10/22/23

Calculate the magnitude of its acceleration in a vertical takeoff from the Moon in meters per square second, assuming the acceleration due to gravity on the Moon is 1.67 m/s^2.
Suppose the mass of a fully loaded module in which astronauts take off from the Moon is 12500 kg. The thrust of its engines is 29500 N.
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10/20/23

Solve this Physics Problem
In an inclined plane, the mass of block 1 is m1 = 3.0 kg, while the mass of block 2 is m2 = 6.0 kg. The coefficient of friction between m1 and the inclined surface is 𝜇k = 0.41. The inclined... more
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10/20/23

Find the derivative of the following functions: Write the solution of each number
Find the derivative of the following functions: Write the solution of each number5. y= ½tanh 2x + ⅔coth 3xans. y' = sech² 2x - 2csch23x6. y = sinh2 (3x2 – 1)ans. y' = 6xsinh(6x2 - 2)7. f(z) =... more
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10/19/23

what is the power supplied by the force of friction?
a block of mass, m = 353g is dragged with a string across a rough horizontal table. The string tension is T= 3.27 N, and it pulls upward at an angle of 45º with the horizontal. At one particular... more
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10/19/23

Extreme problem help needed
Consider the function B(x)=x^a(1-x)^b on 0≤x≤1, with a,b>0.Absolute Maximum value: ______
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10/18/23

Write an expression for the magnitude of the force, F, exerted on the firefighter by the pole.

A firefighter, whose mass (including clothing and equipment) is m = 85 kg, hears the alarm and slides down the pole with a constant downward acceleration of magnitude a = 3.23 m/s^2.Answer in terms... more
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10/17/23

If ln(a)=2, ln(b)=3, and ln(c)=5, evaluate the following. ln[(sqrt)(b^2)(c^2)(a^-2)]
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10/17/23

Suppose f^-1 is the inverse function of a differentiable function f and f(4)=9 , f'(4)=7/5, then (f^-1)'(9)=?
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10/15/23

A spherical balloon is inflated with gas at the rate of 20 ft^3/min. How fast is the radius of the balloon changing at the instant that r=2ft. FIND dr/dt
pls help
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10/14/23

Solve this physics problem
You work at a garden store for the summer. You lift a bag of fertilizer with a force of 130 N, and it moves upward with an acceleration of 0.763 m/s2.(a) What is the mass of the fertilizer bag? (b)... more
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10/14/23

Free Fall question
A bullet is fired straight up from a gun with a muzzle velocity of 185 m/s.Neglecting air resistance, what will be its displacement after 3.5 s? The acceleration of gravity is 9.8 m/s2 .Answer in... more
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10/14/23

Physics HW Force Question, blocks with masses
Blocks with masses of 1.0 kg, 2.0 kg, and 3.0 kg are lined up in a row on a frictionless table. All three are pushed forward by a 13 N force applied to the 1.0 kg block.-How much force does the... more
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10/14/23

HW Physics Problem-I want to make sure I understand how to do this for an exam.
An impala is an African antelope capable of a remarkable vertical leap. In one recorded leap, a 45 kg impala went into a deep crouch, pushed straight up for 0.21 s, and reached a height of... more
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10/12/23

AP Calculus - Graph
State the intervals of the function f(x) = sqrt(x2-9) + sqrt(16-x2) is decreasing.
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10/11/23

Find the work W required to pump the water out of the spout.
A tank is full of water. Find the work W required to pump the water out of the spout. (Use 9.8 m/s2 for g. Use 1000 kg/m3 as the weight density of water. Assume... more
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