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An obstacle has a velocity of 290 km/h and drops with an angle of 30 degrees. It hit's the ground at d=700m.
a) How long was the obstacle in the air?
b) From what height was the obstacle dropped?
An aluminum rod is 20.0 cm long at 20°C and has a mass of 350 g. If 12,500 J of energy is added to the rod by heat, what is the change in length of the rod
An elementary particle called a pi meson (or pion for short) has an average lifetime of 2.6*10^-8 s when at rest. Find how far would the pion have traveled relative to Earth
The x-component of a velocity vector that has an angle of 31 degrees to the +x-axis has a magnitude of 4.9m/s. What is the magnitude of the velocity
the number of radioactive nuclei present at the state of an experiment is 2.78e15. the number present twenty days later is 5.14e14. what is the half life in days of the nuclei
A 6.4kg ball, hanging from the ceiling by a light wire 135cm long, is struck in an elastic collision by a 1.80 ball moving horizontally at 4.20 m/s just before the collision. Find the tension in the wire just after the collision.
A sticky hockey puck slides along a frictionless horizontal ice surface at 75m/s in the + x-direction. what is the angle of their final velocity vector below the +x direction
While a roofer is working on a roof that slants at 39.0 degrees above the horizontal, he accidentally nudges his 93.0 N toolbox, causing it to start sliding downward, starting from rest.
A basketball of mass 270 g and radius 17 cm rolls with an initial speed of 2.5 m/s. What distance along the ramp will the ball travel before it comes to a stop
A 1500 car travelling at 26 suddenly runs out of gas while approaching the valley that looks like an inverted hump. 12m at the left where the care runs out of gas and 19 m at the right were it is headed. What will be the car's speed as it coasts into..
A vertical spring (spring constant = 119 N/m) is mounted on the floor. A 0.390 kg block is placed on top of the spring and pushed down to start it oscillating in simple harmonic motion. The block is not attached to spring.
The aorta has an inside diameter of approximately 2.1 cm, compared to that of a capillary, which is about 1.0 × 10^?5 m (10µm). how many capillaries does the circulatory system have
A proton moving at 7.00 106 m/s through a magnetic field of magnitude 1.74 T experiences a magnetic force of magnitude 7.40 10-13 N. What is the angle between the proton's velocity and the field
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