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A constant horizontal pull of 8.80 drags a box along a horizontal floor through a distance of 19.5 Suppose that the same pull is exerted at an angle above the horizontal. If this pull now does 57.0 of work on the box while pulling it through the same distance, what angle does the force make with the horizontal?
What is the speed of the arrow as it leaves the bow. At a height of 5 meters above the surface of a lake, a sound pulse is generated. The echo from the bottom of the lake returns to point of origin 0.130 s later. The air and water temperatures are ..
A turtle ambles leisurely-as turtles tend to do-when it moves from a location with position vector r1,x = 1.01 m and r1,y = -2.99 m in a lettuce garden to another location, What are the components and the magnitude of the turtle\'s average velocity
A certain type of laser emits light that has a frequency of 6.0 × 1014 Hz. How many wavelengths are there in one pulse
An airplane pilot wishes to fly due west. A wind of 72.0 km/h is blowing toward the south, What is the speed of the plane over the ground
A spring with a constant of 32 N/m is placed on a horizontal smooth surface and a mass of 2.3 kg is pushed against it. What is the velocity of the mass as it leaves contact with the spring
An object is placed directly between a large planet and a star. Find the distance from the planet for which the net gravitational force exerted by the planet
Brianne's heart is beating at 76.0 beats per minute. Calculate the frequency of her heart's oscillations in Hz
In designing a transformer, an engineer knows she needs 240 V to come out of the secondary circuit. what is the ratio of primary voltage to primary turns
A parallel-plate capacitor has an area of 0.12 m^2 and a separation of 1.2 cm. A battery charges the plates to a potential difference of 120V and is then disconnected. A dielectric slab of thickness 4.0 mm and dielectric constant 4.8 is then place..
An ambulance moving at 42 m/s sounds its siren whose frequency is 450 Hz. a car is moving in the same direction as the ambulance at 25 m/s. what frequency does a person in the car hear as the car approaches the ambulance? After the ambulance passe..
A block of mass 9.0 kg is placed on a horizontal table and is connected to a second hanging block with mass M by a cord passing over a frictionless pulley. find the maximum mass M for which system will stay at rest
A kite is hovering over the ground at the end of a straight 45-m line. The tension in the line has a magnitude of 14 N. Find the height of the kite
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