A 100 W lightbulb is plugged into a standard 120 V outlet. How much does it cost per month (30 days) to leave the light turned on continuosly? Assume electrical energy costs 7.5/kWh. (Enter dollars with no unit) What is the resistance of the bulb? What is the current in the bulb?

What is its rotational speed in revolutions per minute : At what depth under water does the pressure increase by 100,000 Pa? The Earth rotates with a period of one day. What is its rotational speed in revolutions per minute? The Earth rotates with a period of one day. What is its rotational speed in revolu.. |

What is the tension force in each cable : A 1000N beam is loaded with a 2000N filing cabinet and supported by two cables. If the beam is 8 meters long and the filing cabinet is 2 meters from the left cable, what is the tension force in each cable? total of both tension? tension in left cable.. |

What speed do the two cars move after the collision : A 0.2kg toy car rolls down ramp. If the car started from rest at a height of 0.30m, what is its speed at the bottom of the ramp? Incorrect: Your answer is incorrect. At the bottom, it hits another stationary car with equal mass. The two cars have Vel.. |

One string of a certain musical instrumen : One string of a certain musical instrument is 72.0 cm long and has a mass of 8.76 g . It is being played in a room where the speed of sound is 344 m/s . a) To what tension must you adjust the string so that, when vibrating in its second overtone, .. |

Lightbulb is plugged into standard-resistance of bulb : A 100 W lightbulb is plugged into a standard 120 V outlet. How much does it cost per month (30 days) to leave the light turned on continuosly? Assume electrical energy costs 7.5/kWh. (Enter dollars with no unit) What is the resistance of the bulb? Wh.. |

Calculate the current and calculate the current density : A potential difference of 4.80 V will be applied to a 43.00 m length of 18-gauge copper wire (diameter = 0.0400inches). Calculate the current. Calculate the current density. Calculate the electric field. Calculate the rate at which thermal energy wil.. |

A nichrome heater dissipates : A Nichrome heater dissipates 450 W when the applied potential difference is 110 V and the wire temperature is 700°C. What would be the dissipation rate if the wire temperature were held at 200°C by immersing the wire in a bath of cooking oil? The app.. |

What is the density of the fluid : An aluminum cylinder is suspended in an unknown fluid by a spring scale. Outside the fluid, the object weighs 20N. In the fluid it weighs 10N. If the cylinder has a volume of 10–4m3, what is the density of the fluid? |

What is tension in the string as it passes through vertical : A small rock with mass 0.12 is fastened to a massless string with length 0.80 to form a pendulum. The pendulum is swinging so as to make a maximum angle of 45 with the vertical. Air resistance is negligible. |

## Compute the speed of the golf ball just after impactHigh-speed stroboscopic photographs show that the head of a 200-g golf club is traveling at 45 m/s just before it strikes a 46-g golf ball at rest on a tee. Find the speed of the golf ball just after impact |

## Calculate the shear strainAn aluminum cube 10 cm on a side is subject to shear stress. A force of 40,000 N acts on each of four faces. Calculate the shear strain |

## Calculate the kinetic energy of the electronsA beam of electrons is incident on two slits separated by a distance of 2.0×10-6 m. Calculate the kinetic energy of the electrons |

## Find the mass of the ballWhen serving a tennis ball, the player hits it when its velocity is zero (at the highest point of a vertical toss). find the mass of the ball |

## Find out the force exerted by the manA 400kg piano slides 4.0 m down a 30 degree incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. Find out the force exerted by the man. |

## Q1 an electric field of 860 x 107 vm is desired between twoq1. an electric field of 8.60 x 107 vm is desired between two parallel plates each of area 35.0 cm2 and separated by |

## What is the pressure on each shoe independentlyA person with a weight of 237 lb stands on two feet with their weight equally distributed between the two shoes, What is the pressure on each shoe independently |

## Determine the total mass of the rodThe density of a 4.07-m long rod can be described by the linear density function ?(x) = 117 g/m + 15.1x g/m2. Determine the total mass of the rod |

## Find how far are the goggles from the edge of the poolIt's nighttime, and you've dropped your goggles into a swimming pool that is 4.5m deep. How far are the goggles from the edge of the pool |

## Two projectiles are launched from a cliff of heightTwo projectiles are launched from a cliff of height H = 16m as shown in the diagram below. Projectile 1 is launched with velocity v1 = 12 m/s at an angle q1, where q1 = 35 degrees. Projectile 2 is launched with velocity v2 = 12 m/s at an angle q2.. |

## At what height does the dolphin catch the ballThe trainer releases the ball at the horizontal distance of 4.72m away and the vertical distance of 4.61m above the water. At what height does the dolphin catch the ball |

## What is the smallest possible value for the area of the loopThe magnetic flux through a loop of wire is ?B = 5.7 T · m2. what is the smallest possible value for the area of the loop |

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