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A roller coaster moves 85m horizontally,then travels 45m at an angle of 30.0 degrees above the horizontal. What is its displacement from its starting point?
On a distant planet a freely falling object gains speed at a stead rate of 15 meters per second during each second of fall.calculate the acceleration.
A helicopter is lifting two crates simultaneously. One crate with a mass of 148 kg is attached to the helicopter by cable A. The second crate with a mass of 87 kg is hanging below the first crate an
A tennis ball is thrown from ground level with velocity vo directed 30 degree above the horizontal. If it takes the ball 1.0 s to reach the top of it's trajectory , what is the magnitude of the ini
When conducting an accident investigation, write down some of the more important methods which need to be used in interviewing accident witnesses in order to make sure all information is objective a
A car is moving down a street at 55 km/h. A child suddenly runs into the street. If it takes the driver 0.75 s to react and apply the brakes, how many meters will the hare have moved before it begi
A metal "hump" is placed on the surface of the infinitely large conducting plate as shown on the picture. The hump has a form of a hemisphere, radius R, with the center O lying in the plate's plane.
The law of conservation of energy with the description of how this law applies to energy use and energy conversions.
His face was red, like you would predict from the heat, however no clamminess or paleness.
You are outside tossing a football with your friends. You throw the football at an angle of 52.3° above the horizontal with a speed of 27.79 m/s.
A block is at rest on the incline shown in the figure. The coefficients of static and kinetic friction are μs = 0.75 and μk = 0.64, respectively. The acceleration of gravity is 9.8 m/s2 . What
Two blocks are connected by a rope passing through a pulley. One block is on a table and has a mass of 1kg, the other is hanging and has a mass of 1Kg. The table and pulley are both frictionless. F
A spring with a force constant of 52 N / m has a relaxed length of 2.45 m. When a mass is attached to the end of the spring and allowed to come to rest, the vertical length of the spring is 3.57 m.
Name the space formed between the visceral and parietal pleura.
A ranger in a national park is driving at 49 km/h when a deer jumps onto the road 67 m ahead of the vehicle. After a reaction time of t s, the ranger applies the brakes to produce a deceleration of
Jamie is playing tennis. A 0.057kg ball is coming towards her at a velocity of -14 m/s. After she hits it in the exact opposite direction, it has a velocity of 18 m/s. If the ball was in contact wi
A pelican flying along a horizontal path drops a fish from a height of 4.7 m. The fish travels 7.7 m horizontally before it hits the water below. What was the pelican's initial speed? The accelerat
Johnny throws a shotput at an angle of 45.° and it travels a horizontal distance of 30. meters. If he releases the shotput at the same speed but changes the angle to 55.°, what will be the
How has the approach to the public health changed over the last 200 years? Which events or movements in public health and were most influential? Explain why?
A block is being moved up a 60.0° incline as shown in the figure above. The block has a mass of 16.0 kg. The block is being pushed by an applied force Fapp = 2510 N which is directed perfectly h
A 45kg box is pulled across a horizontal floor. A rope attached to the box makes an angle of 30 degrees with the horizontal and the coefficient of friction between the box and the floor is 0.7. Wha
The planet Mars requires 2.35 years to orbit the sun, which has a mass of 2 × 1030 kg, in an almost circular trajectory. Find the radius of the orbit of Mars as it circles the sun. The gravit
workman on the scaffolding outside one of the science classrooms drops a wrench. A physics student, bored with the lesson, times it as it falls past the classroom window.
An experiment measures the speed of a 250-kilogram motorcycle every 2 seconds. The motorcycle moves in a straight line. What is the net force acting on the motorcycle?
While we were explaining the cardiac system and possible problems associated to it, one of my neighbors was diagnosed with Marfan's syndrome.