01/12/21

Please help me with this
Solve the equation 15tan θ -51=24 for a value of θ  in the first quadrant. Give your answer in radians and degrees. Round your answer in radians to five decimal places and in degrees to three... more
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01/11/21

A particle moves along the x − axis so that its position, x(t) at the time t is given by x(t)=-1/2cos(-2t^3)
a). Find the acceleration of the particle at t=2b). Find the average acceleration of the particle on the time interval [1,3]Answers should be up to the 3rd decimal place in accuracy, units are not... more
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01/08/21

How much energy, in kJ, does a 75 Watt light bulb use if turned on for one second?

How much energy, in kJ, does a 75 Watt light bulb use if turned on for one second? how much energy, in kJ, does a 50 Watt light bulb use if turned on for one hour? what is the energy consumed... more
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01/05/21

solve the radical expression step by step:
√81x5y3z8
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01/05/21

Question of Physics
A half uniform annulus of inner and outer radii R1 and R2 has a nonuniform surface mass density given by σ = σ0 r where σ0 is a positive constant and r is the radial distance from the origin... more
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01/05/21

Question of Physics
A block of mass of 2m comes with initial speed v0 and collides with a system of two particles connected by a spring of spring constant k perfectly inelastic on a frictionless horizontal table, each... more
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12/30/20

An areosynchronous satellite orbits Mars (mass = 6.42 x 1023 kg) once every Martian day, 88640 s. At what radius does it orbit?
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12/27/20

physics atomics
The average binding energy per nucleon of the  nucleus is 4.0 MeV. What is the total energy required to separate the nucleons of one nucleus of ?A.  53 MeVB.  60 MeVC.  113 MeVD.  173 MeV
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12/26/20

Ratio and Proportion
1.)The ratio of the number of faye's beads to the number of helen's beads was 12:7, After faye had bought another 28 beads and helen had given away 32beads, 5/7 of helen's beads were lefta.)How... more
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12/21/20

fluid dynamics question
Oil (𝜌=876 kg/m3, μ= 0.18 kg/m*s) flows steadily through a sloped pipe upward as depictedin the Figure below. The distance between point 1 and 2 is 15 m, and the pressure at the point1 and 2 is... more
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12/19/20

Vectors and Projectile

rocket is launched straight up into the air. If its entire flight takes 5 seconds...A) What is the initial velocity of the rocket?B) What is the maximum height the rocket reaches
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12/19/20

A company that produces snowboards, which are seasonal projects, forecasts monthly sales for one year to be...
S = 77.00 + 45.50 cos (πt /6) where S is the sales in thousands of units and t is the time in months, with t = 1 corresponding to January.(a) Use a graphing utility to graph the sales function over... more
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12/19/20

Vectors and Projectile Motion
A baseball is hit from a bat at 37m/s at an angle of 40°to the horizontal . It travels towards the outfield fence,which is 130m away. Does the baseball make it over the 3m high fence? If it does... more
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12/17/20

What must the acceleration of the aircraft be, and in what direction, if the passengers feel “weightless”?
NASA has an airplane which can mimic the feeling of zero gravity. The nickname of this aircraft is the “vomit comet” because of how some people become nauseous.
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12/16/20

Math/physics Gravity Question
The gravitational field of earth is given by G = 9.8 N/Kg. If an object is dropped from a height of 10 meters, what will its velocity of fall be in m/s when it is 9% of the way in its fall to the... more
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12/16/20

Lydia Launches a model rocket. The height in feet of the model rocket at any given time is given by the equation 128t-16
Lydia Launches a model rocket. The height in feet of the model rocket at any given time is given by the equation 128t-16y^2, where t represents the time in seconds after the launch. Write the... more
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12/15/20

An experiment consists of drawing 1 card from a standard​ 52-card deck. What is the probability of drawing a black card​?

An experiment consists of drawing 1 card from a standard​ 52-card deck. What is the probability of drawing a black card​? Find the number of elements in event​ E, n(E), and the total number of... more
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12/15/20

 When an object 1.8 m (180 cm) away is being photographed, what is the magnification?
A camera is equipped with a lens with a focal length of 32 cm. When an object 1.8 m (180 cm) away is being photographed, what is the magnification?
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12/14/20

A cup of coffee has cooled from 92°C to 50°C after 14 minutes in a room at 25°C. How long will it take to cool to ​40°C?
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12/14/20

Calculate the force of gravity between a newborn baby and the planet Mars, when Mars is at its closest to earth?
Newborn babies mass- 3 kgMars mass- 6.4 x 10^23 kgR= 5.6 x 10^10 m
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12/14/20

According to the equation for gravitational force, what happens to the force between two bodies if the mass of one of the bodies is double? If both masses are double?
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12/14/20

Physics Question
Engineers are developing new types of guns that might someday be used to launch satellites as if they were bullets. One such gun can give a small object a velocity of 3.4 km/s, moving it through... more
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12/13/20

At the beginning of an experiment, a scientist has 356 grams of radioactive goo..?
At the beginning of an experiment, a scientist has 356 grams of radioactive goo. After 225 minutes, her sample has decayed to 5.5625 grams.What is the half-life of the goo in minutes? Find a... more
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12/12/20

mathematical pendulum
Let the oscillation time of a mathematical pendulum be 5 seconds. How does this change when we take it to the moon?
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12/11/20

Physics help????
Your friend is enjoying riding around on their novelty unicycle. Its wheel has an inner radius 2.8 m and an outer radius of 2 m and a mass of 11.5 kg (model it as a thick hoop rotating about its... more
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