D This is the greatest number of beats your heart can pump in one minute. O Resting Heart Rate O Heart Rate O Maximum Heart Rate O Target Heart Rate Question
marshmallow is dropped from a 6-meter high pedestrian bridge and .93 seconds later, it lands right on the head of an unsuspecting person walking underneath. How tall is the person with the marshmallow on his head?
Which gravitational force is greater, that which the earth exerts on the moon, or the force the moon exerts on the earth?.
a 0.400 kg ball is shot directly upward at initial speed 40.0 m/s. what is its angular momentum about p, 2.00 m horizontally from the launch point, when the ball is (a) at maximum height and (b) halfway back to the ground? what is the torque on the ball about p due to the gravitational force when the ball is (c) at maximum height and
when the sledder slides to the top of the left hill (shown in the figure below), her speed is 6.5 m/s. the total mass of the girl and the sled is 55 kg. she continues sliding down, passes the valley and moves up on the right hill. what is the speed of the sledder at the top of the right hill assuming a thermal energy of 160 j is generated due to friction during the sliding process?
a small object of mass m starts at rest at the position shown and slides along the frictionless loop-the-loop track of radius r. what is the smallest value of y such that the object will slide without losing contact with the track?
an attack helicopter is equipped with a 20- mm cannon that fires 183 g shells in the forward direction with a muzzle speed of 380 m/s. the fully loaded helicopter has a mass of 6250 kg. a burst of 247 shells is fired in a 4.7 s interval. what is the resulting average force on the helicopter? answer in units of n.
an inductor is connected to a 120-v, 60-hz supply. the inductance in the circuit is 2.4 h. what is the inductive reactance?
the work done to separate opposite charges results in different values of energy per charge. what is this difference called?
Along with force, which other variable is used to calculate impulse?(1 point) A The mass of an object. B The amount of time the object is in motion. C The amount of time the force is applied. D The speed of the object.
you are sitting at the center of a large turntable at an amusement park as it is set spinning freely. you decide to crawl towards the edge of the turntable. what does your action do to the rate of rotation of the turntable? explain
the 305 m305 m diameter arecibo radio telescope detects radio waves with wavelengths from 3 to 100 cm3 to 100 cm . what is the angle in radians between two just-resolvable 21.0 cm21.0 cm wavelength point sources for this telescope?
