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In the absence of air resistance, a projectile is launched from and returns to ground level. It follows a trajectory similar to that shown in the figure below and has a range of 28 m. Suppose the launch speed is doubled, and the projectile is fired at the same angle above the ground. What is the new range?
Suppose you are 80 cm from a plane mirror. How large an area of the mirror is utilized to reflect the rays entering one eye from a point on the tip of your nose if your pupil diameter is 4.4 mm?
1. What is the velocity of Jane relative to Mary: GIVE FIRST THE x-component AND THEN THE y-component (and their units). 2. How long is it before they are 22.2 m apart? 3. How far apart are they after 3.86 s?
A man (weighing 915 N) stands on a long railroad flatcar (weighing3270N) as it rolls at 16.0 m/s in the positive direction of anxaxis, with negligible friction. Then the man runs along the flatcar in the negativexdirection at 37.00 m/s relative to..
The weight of passengers on a roller coaster increases by 60% as the car goes through a dip with a 30m radius of curvature
Frank and Mary are twins, and Mary wants to travel to our nearest star system, Alpha Centauri (4.30 lightyears away). How old will Frank be when she returns
a 2000 kg car is slowed down uniformly from 18.0 ms to 7.00 ms in 4.40 s.a what average total force acted on the car
an electron experiences a magnetic force of magnitude 4.60 x10-15 when moving at an angle of 60.0 degree with respect
A parallel-plate capacitor is designed so that the plates can be pulled apart. What is the potential difference between the plates
q1. an green hoop with mass mh 2.5 kg and radius rh 0.14 m hangs from a string that goes over a blue solid disk
A block of mass m1 = 2.9 kg initially moving to the right with a speed of 4.1 m/s on a frictionless, horizontal track collides with a spring attached to a second block of mass m2 = 4.1 kg initially movin
A three level laser has energy levels E 1=1.50 eV, E 2=3.50 eV, and E 3=5.50 eV. Level E 2 is the metastable state. What is the lasing wavelength
How large a force must the compressed air exert to lift a 1.32 x 104 N car? What pressure produces this force? Neglect the weight of the pistons.
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