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One hundred feet from the trunk of a tree on level ground, the angle of elevation of the top of the tree is 370. Estimate the height of the tree to the nearest foot.

One hundred feet from the trunk of a tree on level ground, the angle of elevation of the top of the tree is 370. Estimate the height of the tree to the nearest foot.

A 500-foot weather towe

A 500-foot weather tower used to measure wind speed has a guy wire attached to it 200 feet above the ground. The angle between the wire and the vertical tower is 470. Approximate the length of the... more

How would you solve this equation for b in terms of c?

How would you solve this equation for b in terms of c?1700b(sin(14b/3 + c)) + 68cos(14b/3 + c) - (10625b^2)(cos(14b/3 + c) = 0

A ball on a spring is pulled 6 inches below its rest position and then released. After t seconds, the ball's distance, d, in inches from its rest position is given by the equation below. d=−6cosπ/3t

Find all values of t for which the ball is 3 inches above its rest position. >>Give a general formula for all the solutions by adding multiples of some positive integer n.

physics circuit question

In a parallel circuit, the voltage drop across bulb A is 40.0 V and the voltage drop across bulb C is 15.0 V. Current provided by the battery is 5.0 A and current flowing through bulb B is 3.0... more

Suppose Q=95x11^-t State the staring value A growth factor b and growth/decay rate r

Wouldn't it be a=95 b=11 r -t

Physics Energy Question

A ray of light strikes a side of lucite ( = 1.50) prism at 40° as shown below. Find the angle that the light leaves the prism.The prism is a isosceles with a degree of 70 at the top.

11d

A ray of light strikes a side of a Lucite prism (n = 1.50) at an incident angle of 40.0° as shown in the diagram. Find the angle (labelled with ?) that the light leaves the prism

A ray of light strikes a side of a Lucite prism (n = 1.50) at an incident angle of 40.0° as shown in the diagram. Find the angle (labelled with ?) that the light leaves the prismdiagram:... more

11d

Exponential Functions 29

Find the amount of money (Future Value) in an account where $6,500 is deposited (Present Value) at an interest rate of 3% per year compounded continuously and the money is left in the account for... more

12d

As seen from Earth, which planets in the Solar System have a wide range of phases? Please explain the reason.

As seen from Earth, which planets in the Solar System have a wide range of phases? Please explain the reason.

12d

How to do this ?

From Earth, we are unable to observe the Full Venus (Venus equivalent of the Full Moon). Why? Please explain the reason.

12d

How to do this ?

Why do the Venuses vary in size? Please explain the reason.

13d

Astronomy Wein’s Formula

1. Using the graph that you constructed and from the graph estimated λmax (the best you can) for the following cases:λmax (5000 K) =                    λmax (5500 K) =... more

17d

In considering question #4, how fast is the mass moving when it is half way between the equilibrium and maximum amplitude, AND what is the kinetic and potential energies at that location?

Here is Question Four: 4. A 27.8 gram mass oscillates on the end of a spring and its motion can be described by: x = (1.5) * sin (21.4t) [here the units are standard, meters and seconds] What are... more

20d

A student applies a force of 150 N on a 15 kg box by using a rope held at an angle of 35º above the horizontal. The coefficient of friction between the box and the surface is 0.90...

A student applies a force of 150 N on a 15 kg box by using a rope held at an angle of 35º above the horizontal. The coefficient of friction between the box and the surface is 0.90.a) Calculate the... more

21d

A bank offers two different retirement savings plans to its customers.

For the first offer, the bank will match every dollar deposited up to $450, at which point all funds in the account will collect 3% interest annually. The second offer has no price matching, but... more

An airplane is flying in the direction 140° with an airspeed of 450 mi/hr, and a 30 mi/hr wind is blowing in the direction 65°.

An airplane is flying in the direction 140° with an airspeed of 450 mi/hr, and a 30 mi/hr wind is blowing in the direction 65°. As shown in the figure, these facts may be represented by... more

How do you convert this into an algebraic equation?

sin(arcsin u - arctan v)

06/27/20

A crate of mass 100.0 kg rests on a rough surface inclined at an angle of 37.0° with the horizontal.

A crate of mass 100.0 kg rests on a rough surface inclined at an angle of 37.0° with the horizontal. A massless rope to which a force can be applied parallel to the surface is attached to the crate... more

06/27/20

How to do this?

Using the longitude of Kuala Lumpur which is 101 E, calculate the local time when the local solar time is 12:00. Please explain the reason.

06/27/20

Kinematics Horizontal Motion Problem

A projectile is fired at 28 m/s at an angle of 33 degrees with the horizontal from a point 75 m above the ground. How long did it take for the projectile to hit the ground below? How far did the... more

An automobile travels along a straight road at 15.65 m/s through a 11.18 m/s speed zone. A

An automobile travels along a straight road at 15.65 m/s through a 11.18 m/s speed zone. A police car observed the automobile. At the instant that the two vehicles are abreast of each other,... more

06/25/20

solution with this problem please

The block is released from rest at the position shown, figure 1. The coefficient of kinetic friction over length ab is 0.22, and over length bc is 0.16. Using the principle of work and energy, find... more

06/24/20

I NEED THESE REALLY BADLY PLZ

Data for coronavirus for US is shown.number of days Total number of infection0 110 620 ... more

06/19/20

The voltage is 125 v

a) on an LED tv with an overall internal resistance of 24.0 Ω. How much current will the television draw?b) if they watch for 12.5 hours how much does it cost to power the television if the cost is... more
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