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Concrete has a specific heat capacity of 670 joules/kg-degreesCelsius. A 2kg concrete block, that has a temperature of 20 degreesCelsius, is dropped from a height of 100 meters. What is itstemperature after it hits the ground if it lost no heat to thesurrounding environment? The block is mow raised back to 100 meterswithout losing or gaining heat from the environment. What is the block's temperature after it was raised?
what is the ratio of the amplitude of the damped oscillations. You shoot a 58-g pebble straight up with a catapult whose spring constant is 310 N/m. The catapult is initially stretched by 0.20 m. How high above the starting point does the pebble f..
a passenger on the ferris wheel with a radius of 6.00m drops his keys when he is on the way up and at the 10 oclock
A 1.10x10 kg car starts from rest and accelerates for 5.00s. The magnitude of the acceleration is a = 4.60 m/s . Determine the average power generated by the net force
a proton is placed midway between point a and b. the potential at point a is -20 v and the potential at point b 20 v.
A wire is bent to form a circle whose diameter is 10cm. Find the maximum torque that the magnetic field can exert on the wire
q1. a heavy rope used for as a mooring line for a cruise ship sags a shown. if the mass of the rope is 96 kg what are
A 5.00-kW motor is used to pull a 20.0-kg crate up a 15.0°-incline of length 4.00 m. At what average velocity can the motor move the crate up the incline
A charged rod carrying a negative charge is brought near two conducting spheres that are in contact with each other but insulated from the ground. If the two spheres are then separated, what charge does B have, positive, negative or neutral?
Bob Richards is production manager of Zychol Chemicals, in Houston Texas, is making his quarterly report, which is to include a productivity examine for his section.
A car traveling 51.9 km/h is 26.2 m from a barrier when the driver slams on the brakes. The car hits the barrier 2.84 s later. How fast is the car traveling at impact
From point B, the ball was in the air 2.0 seconds and traveled a horizontial distance of 16.2 meters before hitting the ground. Illustrate with what velocity did the ball leave her hand at point B?
A 3000mL flask is initially open to air at 22°C and 1atm pressure. It's then closed and immersed in boiling water. How many moles escape when the air is released
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